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)

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.

https://ubuntu.com/security/notices/USN-8467-2

https://ubuntu.com/security/notices/USN-8467-1

CVE-2026-42496, CVE-2026-8376