QSN-8675-1: Perl vulnerabilities
2026-08-25

Summary:
Several security issues were fixed in Perl.

Details:
It was discovered that Perl incorrectly handled short source addresses
in the Socket module. An attacker could possibly use this issue to
trigger an out-of-bounds heap read, resulting in information disclosure.
(CVE-2026-12087)

It was discovered that Perl incorrectly handled regular expressions
containing a large number of fixed string alternatives. An attacker
could possibly use this issue to cause incorrect regular expression
matches, resulting in security restrictions being bypassed.
(CVE-2026-13221)

It was discovered that Perl incorrectly handled certain large repeat
counts when processing pack and unpack templates. An attacker could
possibly use this issue to trigger an out-of-bounds heap read, resulting
in information disclosure. (CVE-2026-57432)

It was discovered that Perl incorrectly handled certain crafted data
when deserializing with the Storable module. An attacker could possibly
use this issue to trigger an integer overflow and application
termination, resulting in a denial of service. (CVE-2026-57433)

Affected QuantaStor releases:
  6.9.1.001 jammy: libperl5.34 5.34.0-3ubuntu1.9 (fixed in 5.34.0-3ubuntu1.8)
  6.9.1.001 jammy: perl 5.34.0-3ubuntu1.9 (fixed in 5.34.0-3ubuntu1.8)
  6.9.1.001 jammy: perl-base 5.34.0-3ubuntu1.9 (fixed in 5.34.0-3ubuntu1.8)
  6.9.1.001 jammy: perl-modules-5.34 5.34.0-3ubuntu1.9 (fixed in 5.34.0-3ubuntu1.8)
  6.9.0.464 jammy: libperl5.34 5.34.0-3ubuntu1.9 (fixed in 5.34.0-3ubuntu1.8)
  6.9.0.464 jammy: perl 5.34.0-3ubuntu1.9 (fixed in 5.34.0-3ubuntu1.8)
  6.9.0.464 jammy: perl-base 5.34.0-3ubuntu1.9 (fixed in 5.34.0-3ubuntu1.8)
  6.9.0.464 jammy: perl-modules-5.34 5.34.0-3ubuntu1.9 (fixed in 5.34.0-3ubuntu1.8)
  6.8.6.015 jammy: libperl5.34 5.34.0-3ubuntu1.9 (fixed in 5.34.0-3ubuntu1.8)
  6.8.6.015 jammy: perl 5.34.0-3ubuntu1.9 (fixed in 5.34.0-3ubuntu1.8)
  6.8.6.015 jammy: perl-base 5.34.0-3ubuntu1.9 (fixed in 5.34.0-3ubuntu1.8)
  6.8.6.015 jammy: perl-modules-5.34 5.34.0-3ubuntu1.9 (fixed in 5.34.0-3ubuntu1.8)
  6.8.5.018 jammy: libperl5.34 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.5.018 jammy: perl 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.5.018 jammy: perl-base 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.5.018 jammy: perl-modules-5.34 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.4.038 jammy: libperl5.34 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.4.038 jammy: perl 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.4.038 jammy: perl-base 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.4.038 jammy: perl-modules-5.34 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.3.018 jammy: libperl5.34 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.3.018 jammy: perl 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.3.018 jammy: perl-base 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.3.018 jammy: perl-modules-5.34 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.2.002 jammy: libperl5.34 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.2.002 jammy: perl 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.2.002 jammy: perl-base 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.2.002 jammy: perl-modules-5.34 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.1.007 jammy: libperl5.34 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.1.007 jammy: perl 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.1.007 jammy: perl-base 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.1.007 jammy: perl-modules-5.34 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.0.205 jammy: libperl5.34 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.0.205 jammy: perl 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.0.205 jammy: perl-base 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)
  6.8.0.205 jammy: perl-modules-5.34 5.34.0-3ubuntu1.7 (fixed in 5.34.0-3ubuntu1.8)

CVEs: CVE-2026-13221, CVE-2026-12087, CVE-2026-57433, CVE-2026-57432

References:
  https://ubuntu.com/security/notices/USN-8675-1