[USN-8467-2] Perl vulnerabilities
[USN-8496-2] cifs-utils regression
[USN-8467-2] Perl vulnerabilities
==========================================================================
Ubuntu Security Notice USN-8467-2
July 02, 2026
perl vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 25.10
Summary:
Several security issues were fixed in Perl.
Software Description:
- perl: Practical Extraction and Report Language
Details:
USN-8467-1 fixed vulnerabilities in Perl. This update provides the
corresponding fix for Perl on Ubuntu 25.10.
Original advisory details:
It was discovered that Perl's Archive::Tar module incorrectly handled
symlink and hardlink targets during extraction. An attacker could use this
issue to read or overwrite arbitrary files outside the extraction
directory. (CVE-2026-42496)
It was discovered that Perl had a heap buffer overflow when compiling
regular expressions with a repeated fixed string on 32-bit builds. An
attacker could use this issue to cause a denial of service or possibly
execute arbitrary code. (CVE-2026-8376)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 25.10
libperl-dev 5.40.1-6ubuntu0.1
libperl5.40 5.40.1-6ubuntu0.1
perl 5.40.1-6ubuntu0.1
perl-base 5.40.1-6ubuntu0.1
perl-debug 5.40.1-6ubuntu0.1
perl-modules-5.40 5.40.1-6ubuntu0.1
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8467-2
https://ubuntu.com/security/notices/USN-8467-1
CVE-2026-42496, CVE-2026-8376
Package Information:
https://launchpad.net/ubuntu/+source/perl/5.40.1-6ubuntu0.1
[USN-8496-2] cifs-utils regression
==========================================================================
Ubuntu Security Notice USN-8496-2
July 03, 2026
cifs-utils 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-8496-1 introduced a regression in cifs-utils
Software Description:
- cifs-utils: Common Internet File System utilities
Details:
USN-8496-1 fixed a vulnerability in cifs-utils. Unfortunately, the fix
introduced a regression with Kerberos mounts. This update reverts the
security update until a complete fix is available.
We apologize for the inconvenience.
Original advisory details:
It was discovered that cifs-utils incorrectly dropped root privileges
before looking up user information. A local attacker could possibly use
this issue to execute arbitrary code as the root user.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 26.04 LTS
cifs-utils 2:7.4-1ubuntu0.26.04.2
Ubuntu 25.10
cifs-utils 2:7.4-1ubuntu0.25.10.2
Ubuntu 24.04 LTS
cifs-utils 2:7.0-2ubuntu0.4
Ubuntu 22.04 LTS
cifs-utils 2:6.14-1ubuntu0.5
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8496-2
https://ubuntu.com/security/notices/USN-8496-1
https://launchpad.net/bugs/2159053
Package Information:
https://launchpad.net/ubuntu/+source/cifs-utils/2:7.4-1ubuntu0.26.04.2
https://launchpad.net/ubuntu/+source/cifs-utils/2:7.4-1ubuntu0.25.10.2
https://launchpad.net/ubuntu/+source/cifs-utils/2:7.0-2ubuntu0.4
https://launchpad.net/ubuntu/+source/cifs-utils/2:6.14-1ubuntu0.5
