https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sat, 03 Oct 2026 14:30:17 +0000 https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-12087 <p><strong>Affected:</strong> Ubuntu:Pro:14.04:LTS: perl, Ubuntu:Pro:16.04:LTS: perl, Ubuntu:16.04:LTS: libsocket-perl, Ubuntu:Pro:18.04:LTS: perl, Ubuntu:18.04:LTS: libsocket-perl, Ubuntu:Pro:20.04:LTS: perl, Ubuntu:20.04:LTS: libsocket-perl, Ubuntu:22.04:LTS: libsocket-perl, Ubuntu:22.04:LTS: perl, Ubuntu:24.04:LTS: libsocket-perl and 5 more</p> <p>Socket versions before 2.041 for Perl have an out-of-bounds heap read. In Socket.xs, pack_ip_mreq_source() checks the length of its source argument before the argument is read, so the check tests the byte length carried over from the preceding multiaddr argument instead. Both addresses occupy a 4-byte field, so a valid multiaddr lets a source of any length pass the check, and the source is then copied into the 4-byte imr_sourceaddr field with a fixed-size copy. A source shorter than 4 bytes is not rejected, and the copy reads up to 3 bytes past the end of its buffer. Calling pack_ip_mreq_source() with a source value shorter than 4 bytes copies adjacent heap memory into the returned packed structure.</p> <p><strong>Affected:</strong> Ubuntu:Pro:14.04:LTS: perl, Ubuntu:Pro:16.04:LTS: perl, Ubuntu:16.04:LTS: libsocket-perl, Ubuntu:Pro:18.04:LTS: perl, Ubuntu:18.04:LTS: libsocket-perl, Ubuntu:Pro:20.04:LTS: perl, Ubuntu:20.04:LTS: libsocket-perl, Ubuntu:22.04:LTS: libsocket-perl, Ubuntu:22.04:LTS: perl, Ubuntu:24.04:LTS: libsocket-perl and 5 more</p> <p>Socket versions before 2.041 for Perl have an out-of-bounds heap read. In Socket.xs, pack_ip_mreq_source() checks the length of its source argument before the argument is read, so the check tests the byte length carried over from the preceding multiaddr argument instead. Both addresses occupy a 4-byte field, so a valid multiaddr lets a source of any length pass the check, and the source is then copied into the 4-byte imr_sourceaddr field with a fixed-size copy. A source shorter than 4 bytes is not rejected, and the copy reads up to 3 bytes past the end of its buffer. Calling pack_ip_mreq_source() with a source value shorter than 4 bytes copies adjacent heap memory into the returned packed structure.</p> https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-12087