[DLA 4616-1] haveged security update
[DLA 4615-1] exim4 security update
ELA-1749-1 exim4 security update (by )
[DLA 4618-1] gsasl security update
[DLA 4617-1] dovecot security update
ELA-1750-1 gsasl security update (by )
[SECURITY] [DLA 4616-1] haveged security update
- -------------------------------------------------------------------------
Debian LTS Advisory DLA-4616-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Thorsten Alteholz
June 05, 2026 https://wiki.debian.org/LTS
- -------------------------------------------------------------------------
Package : haveged
Version : 1.9.14-1+deb11u1
CVE ID : CVE-2026-41054
Dirk Mueller discovered that a flaw in the function performing a
credential check on the command socket of haveged, a userspace entropy
daemon, may result in local privilege escalation.
For Debian 11 bullseye, this problem has been fixed in version
1.9.14-1+deb11u1.
We recommend that you upgrade your haveged packages.
For the detailed security status of haveged please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/haveged
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
[SECURITY] [DLA 4615-1] exim4 security update
- -------------------------------------------------------------------------
Debian LTS Advisory DLA-4615-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Thorsten Alteholz
June 05, 2026 https://wiki.debian.org/LTS
- -------------------------------------------------------------------------
Package : exim4
Version : 4.94.2-7+deb11u6
CVE ID : CVE-2026-48840
Warisjeet Singh discovered that Exim, a mail transport agent, does not
properly handle PROXY frames whose declared payload length is too short
for the claimed address family, which may result in information
disclosure in configurations with SUPPORT_PROXY and 'host_proxy' set.
For Debian 11 bullseye, this problem has been fixed in version
4.94.2-7+deb11u6.
We recommend that you upgrade your exim4 packages.
For the detailed security status of exim4 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/exim4
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
ELA-1749-1 exim4 security update (by )
Package : exim4
Version : 4.89-2+deb9u15 (stretch), 4.92-8+deb10u12 (buster)
Related CVEs :
CVE-2026-48840
Warisjeet Singh discovered that Exim, a mail transport agent, does not
properly handle PROXY frames whose declared payload length is too short
for the claimed address family, which may result in information
disclosure in configurations with SUPPORT_PROXY and ‘host_proxy’ set.ELA-1749-1 exim4 security update (by )
[SECURITY] [DLA 4618-1] gsasl security update
- -------------------------------------------------------------------------
Debian LTS Advisory DLA-4618-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Thorsten Alteholz
June 05, 2026 https://wiki.debian.org/LTS
- -------------------------------------------------------------------------
Package : gsasl
Version : 1.10.0-4+deb11u2
CVE ID : CVE-2026-48829
It was discovered that missing input sanitising in the DIGEST-MD5 parser
of the GNU SASL library could result in denial of service.
For Debian 11 bullseye, this problem has been fixed in version
1.10.0-4+deb11u2.
We recommend that you upgrade your gsasl packages.
For the detailed security status of gsasl please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/gsasl
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
[SECURITY] [DLA 4617-1] dovecot security update
-------------------------------------------------------------------------
Debian LTS Advisory DLA-4617-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Guilhem Moulin
June 05, 2026 https://wiki.debian.org/LTS
-------------------------------------------------------------------------
Package : dovecot
Version : 1:2.3.13+dfsg1-2+deb11u4
CVE ID : CVE-2026-33603 CVE-2026-40020 CVE-2026-42006
Debian Bug : 1136444
Multiple vulnerabilities were discovered in dovecot, a POP3/IMAP server,
which could lead to Denial of Service or information leak.
CVE-2026-33603
An attacker can use a specially crafted base64 exchange between
Dovecot and Client to fake SCRAM TLS channel binding and later
eavesdrop communications between Dovecot and client as MITM proxy.
CVE-2026-40020
An attacker can use the IMAP `SETACL` command to inject the anyone
permission to user's dovecot-acl file even if
`imap_acl_allow_anyone=no`, thereby allowing folders to be spammed
to all users. (The impact was limited to being able to spam folders
to other users. No unexpected access is gained.)
CVE-2026-42006
An attacker can cause uncontrolled memory usage with excessive
bracing over IMAP. This stems from an incomplete fix for
CVE-2026-27857.
For Debian 11 bullseye, these problems have been fixed in version
1:2.3.13+dfsg1-2+deb11u4.
We recommend that you upgrade your dovecot packages.
For the detailed security status of dovecot please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/dovecot
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
ELA-1750-1 gsasl security update (by )
Package : gsasl
Version : 1.8.0-8+deb9u2 (stretch), 1.8.0-8+deb10u2 (buster)
Related CVEs :
CVE-2026-48829
It was discovered that missing input sanitising in the DIGEST-MD5 parser
of the GNU SASL library could result in denial of service.ELA-1750-1 gsasl security update (by )
