[USN-8467-2] Perl vulnerabilities

[noreply+usn-bot at canonical.com]

==========================================================================
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
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 833 bytes
Desc: OpenPGP digital signature
URL: <https://lists.ubuntu.com/archives/ubuntu-security-announce/attachments/20260702/1e55fb5a/attachment.sig>