Usn

USN-8675-2: Perl vulnerabilities Publication date 9 September 2026 Overview Several security issues were fixed in Perl. Releases Packages - perl - Practical Extraction and Report Language Details USN-8675-1 fixed vulnerabilities in Perl. This update provides the corresponding fix for Perl on Ubuntu 26.04 LTS. Original advisory 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... USN-8675-1 fixed vulnerabilities in Perl. This update provides the corresponding fix for Perl on Ubuntu 26.04 LTS. Original advisory 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) Update instructions In general, a standard system update will make all the necessary changes. Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions: | Ubuntu Release | Package Version | || |---|---|---|---| | 26.04 LTS resolute | libperl5.40 – 5.40.1-7ubuntu0.3 | || | perl-base – 5.40.1-7ubuntu0.3 | ||| | perl-modules-5.40 – 5.40.1-7ubuntu0.3 | Reduce your security exposure Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.