CVE-2026-80585

This vulnerability affects the Linux kernel's MPTCP (Multipath TCP) Fast Open implementation. The function mptcp_fastopen_subflow_synack_set_params() incorrectly set the is_mptfo flag before verifying that SYN data had actually been queued on the child socket's receive queue. Data-less TFO SYNs (...

CVE-2026-80585 mptcp: fastopen: only mark MPTFO subflows with SYN data

In the Linux kernel, the following vulnerability has been resolved: mptcp: fastopen: only mark MPTFO subflows with SYN data Passive TCP Fast Open accepts a valid-cookie SYN even when it carries no data. In that case the child socket's receive queue is intentionally left empty...

CVE-2026-19487

Perl versions from 5.9.4 before 5.41.9 produce incorrect regular expression match results when a stale failure flag ends the Aho-Corasick prescan early in Sfindbyclass. The prescan walks the subject for positions where the full pattern could match, and the engine tries it from the leftmost one...

CVE-2026-19487

Perl versions from 5.9.4 before 5.41.9 produce incorrect regular expression match results when a stale failure flag ends the Aho-Corasick prescan early in Sfindbyclass. The prescan walks the subject for positions where the full pattern could match, and the engine tries it from the leftmost one...

EUVD-2026-58110

Perl versions from 5.9.4 before 5.41.9 produce incorrect regular expression match results when a stale failure flag ends the Aho-Corasick prescan early in Sfindbyclass. The prescan walks the subject for positions where the full pattern could match, and the engine tries it from the leftmost one...

PT-2026-71683

Perl versions from 5.9.4 before 5.41.9 produce incorrect regular expression match results when a stale failure flag ends the Aho-Corasick prescan early in S find byclass. The prescan walks the subject for positions where the full pattern could match, and the engine tries it from the leftmost one...