[USN-8399-1] Pillow vulnerabilities
[USN-8400-1] poppler vulnerability
[USN-8398-1] nginx vulnerability
[USN-8397-1] libjxl vulnerability
[USN-8405-1] CUPS vulnerabilities
[USN-8387-1] Inetutils vulnerabilities
[USN-8404-1] Transmission vulnerability
[USN-8402-1] systemd vulnerabilities
[USN-8403-1] Kea DHCP vulnerability
[USN-8408-1] Twig vulnerability
[USN-8407-1] strongSwan vulnerability
[USN-8406-1] Net::CIDR::Lite vulnerabilities
[USN-8401-1] Netty vulnerabilities
[USN-8349-2] rsync regression
[USN-8399-1] Pillow vulnerabilities
==========================================================================
Ubuntu Security Notice USN-8399-1
June 08, 2026
pillow vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 26.04 LTS
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
Summary:
Several security issues were fixed in Pillow.
Software Description:
- pillow: Python Imaging Library
Details:
It was discovered that Pillow incorrectly handled large glyph advance
values in fonts. An attacker could possibly use this issue to cause Pillow
to crash, resulting in a denial of service. (CVE-2026-42308)
It was discovered that Pillow incorrectly handled nested coordinate lists
in certain APIs. An attacker could possibly use this issue to cause Pillow
to crash, resulting in a denial of service. This issue only affected Ubuntu
25.10 and Ubuntu 26.04 LTS. (CVE-2026-42309)
It was discovered that Pillow incorrectly handled certain malformed PDF
files. An attacker could possibly use this issue to cause Pillow to use
excessive resources, leading to a denial of service. (CVE-2026-42310)
It was discovered that Pillow incorrectly handled certain malformed PSD
files. An attacker could possibly use this issue to cause Pillow to crash,
resulting in a denial of service, or to execute arbitrary code. This issue
only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-42311)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 26.04 LTS
python3-pil 12.1.1-2ubuntu1.2
Ubuntu 25.10
python3-pil 11.3.0-1ubuntu1.3
Ubuntu 24.04 LTS
python3-pil 10.2.0-1ubuntu1.2
Ubuntu 22.04 LTS
python3-pil 9.0.1-1ubuntu0.4
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8399-1
CVE-2026-42308, CVE-2026-42309, CVE-2026-42310, CVE-2026-42311
Package Information:
https://launchpad.net/ubuntu/+source/pillow/12.1.1-2ubuntu1.2
https://launchpad.net/ubuntu/+source/pillow/11.3.0-1ubuntu1.3
https://launchpad.net/ubuntu/+source/pillow/10.2.0-1ubuntu1.2
https://launchpad.net/ubuntu/+source/pillow/9.0.1-1ubuntu0.4
[USN-8400-1] poppler vulnerability
==========================================================================
Ubuntu Security Notice USN-8400-1
June 08, 2026
poppler vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 26.04 LTS
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
Summary:
poppler could be made to crash or run programs if it opened a specially
crafted file.
Software Description:
- poppler: PDF rendering library
Details:
It was discovered that poppler incorrectly handled certain malformed PDF
tiling patterns in the Splash backend. An attacker could possibly use this
issue to execute arbitrary code, obtain sensitive information, or cause a
denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 26.04 LTS
libpoppler156 26.01.0-2ubuntu0.1
poppler-utils 26.01.0-2ubuntu0.1
Ubuntu 25.10
libpoppler147 25.03.0-10ubuntu0.2
poppler-utils 25.03.0-10ubuntu0.2
Ubuntu 24.04 LTS
libpoppler134 24.02.0-1ubuntu9.9
poppler-utils 24.02.0-1ubuntu9.9
Ubuntu 22.04 LTS
libpoppler118 22.02.0-2ubuntu0.13
poppler-utils 22.02.0-2ubuntu0.13
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8400-1
CVE-2026-10118
Package Information:
https://launchpad.net/ubuntu/+source/poppler/26.01.0-2ubuntu0.1
https://launchpad.net/ubuntu/+source/poppler/25.03.0-10ubuntu0.2
https://launchpad.net/ubuntu/+source/poppler/24.02.0-1ubuntu9.9
https://launchpad.net/ubuntu/+source/poppler/22.02.0-2ubuntu0.13
[USN-8398-1] nginx vulnerability
==========================================================================
Ubuntu Security Notice USN-8398-1
June 08, 2026
nginx vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 26.04 LTS
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
Summary:
nginx could be made to consume excessive resources if it received specially
crafted network traffic.
Software Description:
- nginx: small, powerful, scalable web/proxy server
Details:
It was discovered that nginx incorrectly handled certain cookie headers in
the HTTP/2 implementation. A remote attacker could possibly use this issue
to cause nginx to consume excessive resources, resulting in a denial of
service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 26.04 LTS
nginx 1.28.3-2ubuntu1.3
nginx-core 1.28.3-2ubuntu1.3
nginx-extras 1.28.3-2ubuntu1.3
nginx-full 1.28.3-2ubuntu1.3
nginx-light 1.28.3-2ubuntu1.3
Ubuntu 25.10
nginx 1.28.0-6ubuntu1.5
nginx-core 1.28.0-6ubuntu1.5
nginx-extras 1.28.0-6ubuntu1.5
nginx-full 1.28.0-6ubuntu1.5
nginx-light 1.28.0-6ubuntu1.5
Ubuntu 24.04 LTS
nginx 1.24.0-2ubuntu7.10
nginx-core 1.24.0-2ubuntu7.10
nginx-extras 1.24.0-2ubuntu7.10
nginx-full 1.24.0-2ubuntu7.10
nginx-light 1.24.0-2ubuntu7.10
Ubuntu 22.04 LTS
nginx 1.18.0-6ubuntu14.13
nginx-core 1.18.0-6ubuntu14.13
nginx-extras 1.18.0-6ubuntu14.13
nginx-full 1.18.0-6ubuntu14.13
nginx-light 1.18.0-6ubuntu14.13
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8398-1
CVE-2026-49975
Package Information:
https://launchpad.net/ubuntu/+source/nginx/1.28.3-2ubuntu1.3
https://launchpad.net/ubuntu/+source/nginx/1.28.0-6ubuntu1.5
https://launchpad.net/ubuntu/+source/nginx/1.24.0-2ubuntu7.10
https://launchpad.net/ubuntu/+source/nginx/1.18.0-6ubuntu14.13
[USN-8397-1] libjxl vulnerability
==========================================================================
Ubuntu Security Notice USN-8397-1
June 08, 2026
jpeg-xl vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 26.04 LTS
- Ubuntu 25.10
Summary:
libjxl could be made to crash or run programs if it opened a specially
crafted file.
Software Description:
- jpeg-xl: Reference codec implementation for JPEG XL compressed raster image format
Details:
It was discovered that libjxl did not properly handle certain crafted PBM
images. An attacker could possibly use this issue to cause libjxl to crash,
resulting in a denial of service, or execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 26.04 LTS
libjxl-tools 0.11.1-6ubuntu4.2
libjxl0.11 0.11.1-6ubuntu4.2
Ubuntu 25.10
libjxl-tools 0.11.1-6ubuntu1.2
libjxl0.11 0.11.1-6ubuntu1.2
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8397-1
CVE-2025-70103
Package Information:
https://launchpad.net/ubuntu/+source/jpeg-xl/0.11.1-6ubuntu4.2
https://launchpad.net/ubuntu/+source/jpeg-xl/0.11.1-6ubuntu1.2
[USN-8405-1] CUPS vulnerabilities
==========================================================================
Ubuntu Security Notice USN-8405-1
June 08, 2026
cups vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 26.04 LTS
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
Summary:
Several security issues were fixed in CUPS.
Software Description:
- cups: Common UNIX Printing System(tm)
Details:
Ariel Silver discovered that CUPS incorrectly handled username comparisons
during authorization checks. A local attacker could possibly use this issue
to gain unauthorized access to restricted operations. (CVE-2026-27447)
Asim Viladi Oglu Manizada discovered that CUPS incorrectly handled
notify-recipient-uri values in the RSS notifier. A remote attacker could
possibly use this issue to overwrite lp-writable files and cause a denial
of service. (CVE-2026-34978)
Jacob Newman discovered that CUPS incorrectly handled filter option strings
when processing job attributes. An attacker could use this issue to cause
CUPS to crash, resulting in a denial of service, or possibly execute
arbitrary code. (CVE-2026-34979)
Asim Viladi Oglu Manizada discovered that CUPS incorrectly handled
page-border values in shared PostScript queues. A remote attacker could
possibly use this issue to execute arbitrary code. (CVE-2026-34980)
Asim Viladi Oglu Manizada discovered that CUPS incorrectly handled
localhost authentication to attacker-controlled IPP services. A local
attacker could possibly use this issue to overwrite arbitrary files
and execute arbitrary code. (CVE-2026-34990)
Tomer Fichman discovered that CUPS incorrectly handled negative
job-password-supported values. A local attacker could possibly use this
issue to cause CUPS to crash, resulting in a denial of service.
(CVE-2026-39314)
Tomer Fichman discovered that CUPS incorrectly handled temporary printer
deletion. An attacker could possibly use this issue to cause CUPS to crash,
resulting in a denial of service, or to execute arbitrary code.
(CVE-2026-39316)
Tomer Fichman discovered that CUPS incorrectly handled certain malformed
SNMP responses. An attacker could possibly use this issue to obtain
sensitive information. (CVE-2026-41079)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 26.04 LTS
cups 2.4.16-1ubuntu1.2
cups-daemon 2.4.16-1ubuntu1.2
Ubuntu 25.10
cups 2.4.12-0ubuntu3.9
cups-daemon 2.4.12-0ubuntu3.9
Ubuntu 24.04 LTS
cups 2.4.7-1.2ubuntu7.13
cups-daemon 2.4.7-1.2ubuntu7.13
Ubuntu 22.04 LTS
cups 2.4.1op1-1ubuntu4.20
cups-daemon 2.4.1op1-1ubuntu4.20
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8405-1
CVE-2026-27447, CVE-2026-34978, CVE-2026-34979, CVE-2026-34980,
CVE-2026-34990, CVE-2026-39314, CVE-2026-39316, CVE-2026-41079
Package Information:
https://launchpad.net/ubuntu/+source/cups/2.4.16-1ubuntu1.2
https://launchpad.net/ubuntu/+source/cups/2.4.12-0ubuntu3.9
https://launchpad.net/ubuntu/+source/cups/2.4.7-1.2ubuntu7.13
https://launchpad.net/ubuntu/+source/cups/2.4.1op1-1ubuntu4.20
[USN-8387-1] Inetutils vulnerabilities
==========================================================================
Ubuntu Security Notice USN-8387-1
June 04, 2026
inetutils vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 26.04 LTS
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in Inetutils.
Software Description:
- inetutils: Collection of common network programs
Details:
It was discovered that the Inetutils telnet daemon incorrectly handled
the CREDENTIALS_DIRECTORY environment variable. An attacker could possibly
use this issue to escalate privileges. (CVE-2026-28372)
It was discovered that the Inetutils telnet daemon did not properly
validate buffer bounds when processing LINEMODE SLC suboptions. An attacker
could possibly use this issue to cause a denial of service or execute
arbitrary code. (CVE-2026-32746)
It was discovered that the Inetutils telnet client incorrectly handled the
NEW_ENVIRON SEND USERVAR option. An attacker could possibly use this issue
to read arbitrary environment variables. (CVE-2026-32772)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 26.04 LTS
inetutils-ftp 2:2.7-2ubuntu1.1
inetutils-ftpd 2:2.7-2ubuntu1.1
inetutils-inetd 2:2.7-2ubuntu1.1
inetutils-ping 2:2.7-2ubuntu1.1
inetutils-syslogd 2:2.7-2ubuntu1.1
inetutils-talk 2:2.7-2ubuntu1.1
inetutils-talkd 2:2.7-2ubuntu1.1
inetutils-telnet 2:2.7-2ubuntu1.1
inetutils-telnetd 2:2.7-2ubuntu1.1
inetutils-tools 2:2.7-2ubuntu1.1
inetutils-traceroute 2:2.7-2ubuntu1.1
telnet 0.17+2.7-2ubuntu1.1
telnetd 0.17+2.7-2ubuntu1.1
Ubuntu 25.10
inetutils-ftp 2:2.6-1ubuntu3.2
inetutils-ftpd 2:2.6-1ubuntu3.2
inetutils-inetd 2:2.6-1ubuntu3.2
inetutils-ping 2:2.6-1ubuntu3.2
inetutils-syslogd 2:2.6-1ubuntu3.2
inetutils-talk 2:2.6-1ubuntu3.2
inetutils-talkd 2:2.6-1ubuntu3.2
inetutils-telnet 2:2.6-1ubuntu3.2
inetutils-telnetd 2:2.6-1ubuntu3.2
inetutils-tools 2:2.6-1ubuntu3.2
inetutils-traceroute 2:2.6-1ubuntu3.2
telnet 0.17+2.6-1ubuntu3.2
telnetd 0.17+2.6-1ubuntu3.2
Ubuntu 24.04 LTS
inetutils-ftp 2:2.5-3ubuntu4.2
inetutils-ftpd 2:2.5-3ubuntu4.2
inetutils-inetd 2:2.5-3ubuntu4.2
inetutils-ping 2:2.5-3ubuntu4.2
inetutils-syslogd 2:2.5-3ubuntu4.2
inetutils-talk 2:2.5-3ubuntu4.2
inetutils-talkd 2:2.5-3ubuntu4.2
inetutils-telnet 2:2.5-3ubuntu4.2
inetutils-telnetd 2:2.5-3ubuntu4.2
inetutils-tools 2:2.5-3ubuntu4.2
inetutils-traceroute 2:2.5-3ubuntu4.2
telnet 0.17+2.5-3ubuntu4.2
telnetd 0.17+2.5-3ubuntu4.2
Ubuntu 22.04 LTS
inetutils-ftp 2:2.2-2ubuntu0.2+esm1
Available with Ubuntu Pro
inetutils-ftpd 2:2.2-2ubuntu0.2+esm1
Available with Ubuntu Pro
inetutils-inetd 2:2.2-2ubuntu0.2+esm1
Available with Ubuntu Pro
inetutils-ping 2:2.2-2ubuntu0.2+esm1
Available with Ubuntu Pro
inetutils-syslogd 2:2.2-2ubuntu0.2+esm1
Available with Ubuntu Pro
inetutils-talk 2:2.2-2ubuntu0.2+esm1
Available with Ubuntu Pro
inetutils-talkd 2:2.2-2ubuntu0.2+esm1
Available with Ubuntu Pro
inetutils-telnet 2:2.2-2ubuntu0.2+esm1
Available with Ubuntu Pro
inetutils-telnetd 2:2.2-2ubuntu0.2+esm1
Available with Ubuntu Pro
inetutils-tools 2:2.2-2ubuntu0.2+esm1
Available with Ubuntu Pro
inetutils-traceroute 2:2.2-2ubuntu0.2+esm1
Available with Ubuntu Pro
Ubuntu 20.04 LTS
inetutils-ftp 2:1.9.4-11ubuntu0.2+esm4
Available with Ubuntu Pro
inetutils-ftpd 2:1.9.4-11ubuntu0.2+esm4
Available with Ubuntu Pro
inetutils-inetd 2:1.9.4-11ubuntu0.2+esm4
Available with Ubuntu Pro
inetutils-ping 2:1.9.4-11ubuntu0.2+esm4
Available with Ubuntu Pro
inetutils-syslogd 2:1.9.4-11ubuntu0.2+esm4
Available with Ubuntu Pro
inetutils-talk 2:1.9.4-11ubuntu0.2+esm4
Available with Ubuntu Pro
inetutils-talkd 2:1.9.4-11ubuntu0.2+esm4
Available with Ubuntu Pro
inetutils-telnet 2:1.9.4-11ubuntu0.2+esm4
Available with Ubuntu Pro
inetutils-telnetd 2:1.9.4-11ubuntu0.2+esm4
Available with Ubuntu Pro
inetutils-tools 2:1.9.4-11ubuntu0.2+esm4
Available with Ubuntu Pro
inetutils-traceroute 2:1.9.4-11ubuntu0.2+esm4
Available with Ubuntu Pro
Ubuntu 18.04 LTS
inetutils-ftp 2:1.9.4-3ubuntu0.1+esm5
Available with Ubuntu Pro
inetutils-ftpd 2:1.9.4-3ubuntu0.1+esm5
Available with Ubuntu Pro
inetutils-inetd 2:1.9.4-3ubuntu0.1+esm5
Available with Ubuntu Pro
inetutils-ping 2:1.9.4-3ubuntu0.1+esm5
Available with Ubuntu Pro
inetutils-syslogd 2:1.9.4-3ubuntu0.1+esm5
Available with Ubuntu Pro
inetutils-talk 2:1.9.4-3ubuntu0.1+esm5
Available with Ubuntu Pro
inetutils-talkd 2:1.9.4-3ubuntu0.1+esm5
Available with Ubuntu Pro
inetutils-telnet 2:1.9.4-3ubuntu0.1+esm5
Available with Ubuntu Pro
inetutils-telnetd 2:1.9.4-3ubuntu0.1+esm5
Available with Ubuntu Pro
inetutils-tools 2:1.9.4-3ubuntu0.1+esm5
Available with Ubuntu Pro
inetutils-traceroute 2:1.9.4-3ubuntu0.1+esm5
Available with Ubuntu Pro
Ubuntu 16.04 LTS
inetutils-ftp 2:1.9.4-1ubuntu0.1~esm6
Available with Ubuntu Pro
inetutils-ftpd 2:1.9.4-1ubuntu0.1~esm6
Available with Ubuntu Pro
inetutils-inetd 2:1.9.4-1ubuntu0.1~esm6
Available with Ubuntu Pro
inetutils-ping 2:1.9.4-1ubuntu0.1~esm6
Available with Ubuntu Pro
inetutils-syslogd 2:1.9.4-1ubuntu0.1~esm6
Available with Ubuntu Pro
inetutils-talk 2:1.9.4-1ubuntu0.1~esm6
Available with Ubuntu Pro
inetutils-talkd 2:1.9.4-1ubuntu0.1~esm6
Available with Ubuntu Pro
inetutils-telnet 2:1.9.4-1ubuntu0.1~esm6
Available with Ubuntu Pro
inetutils-telnetd 2:1.9.4-1ubuntu0.1~esm6
Available with Ubuntu Pro
inetutils-tools 2:1.9.4-1ubuntu0.1~esm6
Available with Ubuntu Pro
inetutils-traceroute 2:1.9.4-1ubuntu0.1~esm6
Available with Ubuntu Pro
Ubuntu 14.04 LTS
inetutils-ftp 2:1.9.2-1ubuntu0.1~esm4
Available with Ubuntu Pro
inetutils-ftpd 2:1.9.2-1ubuntu0.1~esm4
Available with Ubuntu Pro
inetutils-inetd 2:1.9.2-1ubuntu0.1~esm4
Available with Ubuntu Pro
inetutils-ping 2:1.9.2-1ubuntu0.1~esm4
Available with Ubuntu Pro
inetutils-syslogd 2:1.9.2-1ubuntu0.1~esm4
Available with Ubuntu Pro
inetutils-talk 2:1.9.2-1ubuntu0.1~esm4
Available with Ubuntu Pro
inetutils-talkd 2:1.9.2-1ubuntu0.1~esm4
Available with Ubuntu Pro
inetutils-telnet 2:1.9.2-1ubuntu0.1~esm4
Available with Ubuntu Pro
inetutils-telnetd 2:1.9.2-1ubuntu0.1~esm4
Available with Ubuntu Pro
inetutils-tools 2:1.9.2-1ubuntu0.1~esm4
Available with Ubuntu Pro
inetutils-traceroute 2:1.9.2-1ubuntu0.1~esm4
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8387-1
CVE-2026-28372, CVE-2026-32746, CVE-2026-32772
Package Information:
https://launchpad.net/ubuntu/+source/inetutils/2:2.7-2ubuntu1.1
https://launchpad.net/ubuntu/+source/inetutils/2:2.6-1ubuntu3.2
https://launchpad.net/ubuntu/+source/inetutils/2:2.5-3ubuntu4.2
[USN-8404-1] Transmission vulnerability
==========================================================================
Ubuntu Security Notice USN-8404-1
June 08, 2026
transmission vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 26.04 LTS
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
Summary:
Transmission could allow unintended actions if a user visited a malicious
website.
Software Description:
- transmission: lightweight BitTorrent client
Details:
It was discovered that Transmission had a clickjacking weakness in the
browser-facing WebUI and RPC response paths. An attacker could possibly use
this issue to trick users into performing unintended actions.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 26.04 LTS
transmission 4.1.1+dfsg-1ubuntu1.1
transmission-daemon 4.1.1+dfsg-1ubuntu1.1
Ubuntu 25.10
transmission 4.1.0~beta2+dfsg-3ubuntu1.1
transmission-daemon 4.1.0~beta2+dfsg-3ubuntu1.1
Ubuntu 24.04 LTS
transmission 4.0.5-1ubuntu0.1
transmission-daemon 4.0.5-1ubuntu0.1
Ubuntu 22.04 LTS
transmission 3.00-2ubuntu2.2
transmission-daemon 3.00-2ubuntu2.2
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8404-1
CVE-2026-38978
Package Information:
https://launchpad.net/ubuntu/+source/transmission/4.1.1+dfsg-1ubuntu1.1
https://launchpad.net/ubuntu/+source/transmission/4.1.0~beta2+dfsg-3ubuntu1.1
https://launchpad.net/ubuntu/+source/transmission/4.0.5-1ubuntu0.1
https://launchpad.net/ubuntu/+source/transmission/3.00-2ubuntu2.2
[USN-8402-1] systemd vulnerabilities
==========================================================================
Ubuntu Security Notice USN-8402-1
June 08, 2026
systemd vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
Summary:
Several security issues were fixed in systemd.
Software Description:
- systemd: system and service manager
Details:
It was discovered that systemd-nspawn incorrectly handled certain optional
configuration files. A local attacker could possibly use this issue to
escape to the host system and execute arbitrary code. (CVE-2026-40226)
It was discovered that systemd-resolved incorrectly validated DNSSEC
records for signed domains. An attacker could possibly use this issue to
manipulate DNS records. This issue only affected Ubuntu 22.04 LTS.
(CVE-2023-7008)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 25.10
libsystemd0 257.9-0ubuntu2.5
libudev1 257.9-0ubuntu2.5
systemd 257.9-0ubuntu2.5
udev 257.9-0ubuntu2.5
Ubuntu 24.04 LTS
libsystemd0 255.4-1ubuntu8.16
libudev1 255.4-1ubuntu8.16
systemd 255.4-1ubuntu8.16
udev 255.4-1ubuntu8.16
Ubuntu 22.04 LTS
libnss-resolve 249.11-0ubuntu3.21
libsystemd0 249.11-0ubuntu3.21
libudev1 249.11-0ubuntu3.21
systemd 249.11-0ubuntu3.21
udev 249.11-0ubuntu3.21
After a standard system update you need to reboot your computer to make all
the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8402-1
CVE-2023-7008, CVE-2026-40226
Package Information:
https://launchpad.net/ubuntu/+source/systemd/257.9-0ubuntu2.5
https://launchpad.net/ubuntu/+source/systemd/255.4-1ubuntu8.16
https://launchpad.net/ubuntu/+source/systemd/249.11-0ubuntu3.21
[USN-8403-1] Kea DHCP vulnerability
==========================================================================
Ubuntu Security Notice USN-8403-1
June 08, 2026
isc-kea vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 25.10
- Ubuntu 24.04 LTS
Summary:
Kea DHCP could be made to crash if it received specially crafted messages.
Software Description:
- isc-kea: Standards-based DHCP server
Details:
Ali Norouzi discovered that Kea DHCP did not properly handle maliciously
crafted messages over configured API sockets and HA listeners. A remote
attacker could possibly use this issue to cause Kea DHCP to crash,
resulting in a denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 25.10
kea-admin 2.6.3-2ubuntu0.1
kea-common 2.6.3-2ubuntu0.1
kea-dhcp-ddns-server 2.6.3-2ubuntu0.1
kea-dhcp4-server 2.6.3-2ubuntu0.1
kea-dhcp6-server 2.6.3-2ubuntu0.1
Ubuntu 24.04 LTS
kea-admin 2.4.1-3ubuntu0.2
kea-common 2.4.1-3ubuntu0.2
kea-dhcp-ddns-server 2.4.1-3ubuntu0.2
kea-dhcp4-server 2.4.1-3ubuntu0.2
kea-dhcp6-server 2.4.1-3ubuntu0.2
After a standard system update you may need to restart Kea DHCP server
instances to make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8403-1
CVE-2026-3608
Package Information:
https://launchpad.net/ubuntu/+source/isc-kea/2.6.3-2ubuntu0.1
https://launchpad.net/ubuntu/+source/isc-kea/2.4.1-3ubuntu0.2
[USN-8408-1] Twig vulnerability
==========================================================================
Ubuntu Security Notice USN-8408-1
June 08, 2026
php-twig vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 26.04 LTS
Summary:
Twig could be made to run programs if it received specially crafted network
traffic from an authenticated user.
Software Description:
- php-twig: Flexible, fast, and secure template engine for PHP
Details:
It was discovered that Twig did not properly validate PHP callables when
using a source policy. An authenticated user could possibly use this issue
to execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 26.04 LTS
php-twig 3.23.0-2ubuntu0.1~esm1
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8408-1
CVE-2026-24425
[USN-8407-1] strongSwan vulnerability
==========================================================================
Ubuntu Security Notice USN-8407-1
June 08, 2026
strongswan vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 26.04 LTS
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
Summary:
strongSwan could be made to crash or run programs if it received specially
crafted network traffic.
Software Description:
- strongswan: IPsec VPN solution
Details:
Elliott Childre discovered that strongSwan incorrectly handled the cloning
of certain identities. A remote attacker could use this issue to cause
strongSwan to crash, resulting in a denial of service, or possibly execute
arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 26.04 LTS
libstrongswan 6.0.4-1ubuntu3.1
strongswan 6.0.4-1ubuntu3.1
Ubuntu 25.10
libstrongswan 6.0.1-6ubuntu4.4
strongswan 6.0.1-6ubuntu4.4
Ubuntu 24.04 LTS
libstrongswan 5.9.13-2ubuntu4.24.04.4
strongswan 5.9.13-2ubuntu4.24.04.4
Ubuntu 22.04 LTS
libstrongswan 5.9.5-2ubuntu2.7
strongswan 5.9.5-2ubuntu2.7
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8407-1
CVE-2026-47895
Package Information:
https://launchpad.net/ubuntu/+source/strongswan/6.0.4-1ubuntu3.1
https://launchpad.net/ubuntu/+source/strongswan/6.0.1-6ubuntu4.4
https://launchpad.net/ubuntu/+source/strongswan/5.9.13-2ubuntu4.24.04.4
https://launchpad.net/ubuntu/+source/strongswan/5.9.5-2ubuntu2.7
[USN-8406-1] Net::CIDR::Lite vulnerabilities
==========================================================================
Ubuntu Security Notice USN-8406-1
June 08, 2026
libnet-cidr-lite-perl vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 26.04 LTS
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary:
Several security issues were fixed in Net::CIDR::Lite.
Software Description:
- libnet-cidr-lite-perl: module for merging IPv4 or IPv6 CIDR address ranges
Details:
Dave Rolsky discovered that Net::CIDR::Lite did not properly handle
extraneous zero characters at the beginning of an IP address string. A
remote attacker could possibly use this issue to bypass access controls
that are based on IP addresses. This issue only affected Ubuntu 16.04 LTS
and Ubuntu 18.04 LTS. (CVE-2021-47154)
It was discovered that Net::CIDR::Lite did not properly validate the IPv6
group count when handling uncompressed IPv6 addresses. A remote attacker
could possibly use this issue to bypass access controls. (CVE-2026-40198)
It was discovered that Net::CIDR::Lite mishandled IPv4 mapped IPv6
addresses. A remote attacker could possibly use this issue to bypass access
controls that are based on IP addresses. (CVE-2026-40199)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 26.04 LTS
libnet-cidr-lite-perl 0.22-2ubuntu0.26.04.1
Ubuntu 25.10
libnet-cidr-lite-perl 0.22-2ubuntu0.25.10.1
Ubuntu 24.04 LTS
libnet-cidr-lite-perl 0.22-2ubuntu0.24.04.1
Ubuntu 22.04 LTS
libnet-cidr-lite-perl 0.22-1ubuntu0.1
Ubuntu 20.04 LTS
libnet-cidr-lite-perl 0.21-2ubuntu0.1+esm1
Available with Ubuntu Pro
Ubuntu 18.04 LTS
libnet-cidr-lite-perl 0.21-1ubuntu0.18.04.1~esm1
Available with Ubuntu Pro
Ubuntu 16.04 LTS
libnet-cidr-lite-perl 0.21-1ubuntu0.16.04.1~esm1
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8406-1
CVE-2021-47154, CVE-2026-40198, CVE-2026-40199
Package Information:
https://launchpad.net/ubuntu/+source/libnet-cidr-lite-perl/0.22-2ubuntu0.26.04.1
https://launchpad.net/ubuntu/+source/libnet-cidr-lite-perl/0.22-2ubuntu0.25.10.1
https://launchpad.net/ubuntu/+source/libnet-cidr-lite-perl/0.22-2ubuntu0.24.04.1
https://launchpad.net/ubuntu/+source/libnet-cidr-lite-perl/0.22-1ubuntu0.1
[USN-8401-1] Netty vulnerabilities
==========================================================================
Ubuntu Security Notice USN-8401-1
June 08, 2026
netty vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 26.04 LTS
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in Netty.
Software Description:
- netty: event-driven asynchronous network application framework
Details:
It was discovered that Netty's HTTP proxy handler did not properly
validate headers when constructing CONNECT requests. An
attacker could possibly use this issue to inject arbitrary HTTP
headers into CONNECT requests. This issue only affected Ubuntu
18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS,
and Ubuntu 26.04 LTS. (CVE-2026-42578)
It was discovered that Netty's DNS codec did not properly enforce
domain name constraints. An attacker could possibly use this issue to
bypass domain name validation, or cause Netty to consume resources,
leading to a denial of service. This issue only affected Ubuntu 20.04
LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS.
(CVE-2026-42579)
It was discovered that Netty did not correctly handle HTTP/1.0
requests containing both a Transfer-Encoding and Content-Length
header. A remote attacker could possibly use this issue to perform
HTTP request smuggling attacks. (CVE-2026-42581)
Violeta Georgieva discovered that Netty incorrectly paired responses with
requests when handling informational HTTP responses. A remote attacker
could possibly use this issue to perform HTTP request smuggling attacks.
(CVE-2026-42584)
Violeta Georgieva discovered that Netty incorrectly parsed malformed
Transfer-Encoding headers. A remote attacker could possibly use this
issue to perform HTTP request smuggling attacks. (CVE-2026-42585)
It was discovered that Netty's Redis encoder did not validate CRLF
characters. An attacker could possibly use this issue to inject arbitrary
Redis commands. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04
LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS.
(CVE-2026-42586)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 26.04 LTS
libnetty-java 1:4.1.48-16ubuntu0.1~esm2
Available with Ubuntu Pro
Ubuntu 24.04 LTS
libnetty-java 1:4.1.48-9ubuntu0.1+esm3
Available with Ubuntu Pro
Ubuntu 22.04 LTS
libnetty-java 1:4.1.48-4+deb11u2ubuntu0.1+esm3
Available with Ubuntu Pro
Ubuntu 20.04 LTS
libnetty-java 1:4.1.45-1ubuntu0.1~esm6
Available with Ubuntu Pro
Ubuntu 18.04 LTS
libnetty-java 1:4.1.7-4ubuntu0.1+esm6
Available with Ubuntu Pro
Ubuntu 16.04 LTS
libnetty-java 1:4.0.34-1ubuntu0.1~esm4
Available with Ubuntu Pro
Ubuntu 14.04 LTS
libnetty-java 1:3.2.6.Final-2+deb8u2ubuntu0.1~esm1
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8401-1
CVE-2026-42578, CVE-2026-42579, CVE-2026-42581, CVE-2026-42584,
CVE-2026-42585, CVE-2026-42586
[USN-8349-2] rsync regression
==========================================================================
Ubuntu Security Notice USN-8349-2
June 08, 2026
rsync regression
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 26.04 LTS
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
Summary:
USN-8349-1 introduced regressions in rsync.
Software Description:
- rsync: fast, versatile, remote (and local) file-copying tool
Details:
USN-8349-1 fixed vulnerabilities in rsync. The update introduced multiple
regressions in rsync functionality. This update fixes the problem.
Original advisory details:
Calum Hutton discovered that rsync contained a heap-based out-of-bounds
read when handling file transfers. A remote attacker with read access
to an rsync server could possibly use this issue to cause a denial of
service. (CVE-2025-10158)
Batuhan Sancak, Damien Neil, and Michael Stapelberg discovered that
rsync daemons configured without chroot protection were exposed to a
race condition on parent path components. A local attacker with write
access to a module could possibly use this issue to overwrite files,
obtain sensitive information, or escalate privileges.
(CVE-2026-29518)
It was discovered that rsync did not properly validate a length value
while sorting extended attributes. An attacker could possibly use this
issue to cause a denial of service. (CVE-2026-41035)
It was discovered that rsync performed reverse-DNS lookups after
chrooting in some daemon configurations. A remote attacker could
possibly use this issue to bypass hostname-based access controls and
access network services. (CVE-2026-43617)
Omar Elsayed discovered that rsync did not properly check for integer
overflows while decoding compressed tokens. A remote attacker could
possibly use this issue to obtain sensitive information.
(CVE-2026-43618)
Andrew Tridgell discovered that rsync did not fully fix a symlink race
condition in path-based system calls for daemons configured without
chroot protection. A local attacker could possibly use this issue to
overwrite files, obtain sensitive information, or escalate privileges.
(CVE-2026-43619)
Pratham Gupta discovered that rsync did not properly validate an index
while processing file lists. A remote attacker could possibly use this
issue to cause rsync to crash, resulting in a denial of service.
(CVE-2026-43620)
Michal Ruprich discovered that rsync contained an off-by-one error
while handling HTTP proxy responses. An attacker able to intercept network
communications or a malicious proxy server could possibly use this issue to
cause a denial of service. (CVE-2026-45232)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 26.04 LTS
rsync 3.4.1+ds1-7ubuntu0.3
Ubuntu 25.10
rsync 3.4.1+ds1-5ubuntu1.3
Ubuntu 24.04 LTS
rsync 3.2.7-1ubuntu1.5
Ubuntu 22.04 LTS
rsync 3.2.7-0ubuntu0.22.04.7
After a standard system update you need to restart rsync daemons if
configured to make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8349-2
https://ubuntu.com/security/notices/USN-8349-1
https://launchpad.net/bugs/2155874
Package Information:
https://launchpad.net/ubuntu/+source/rsync/3.4.1+ds1-7ubuntu0.3
https://launchpad.net/ubuntu/+source/rsync/3.4.1+ds1-5ubuntu1.3
https://launchpad.net/ubuntu/+source/rsync/3.2.7-1ubuntu1.5
https://launchpad.net/ubuntu/+source/rsync/3.2.7-0ubuntu0.22.04.7
