CVE-2026-98130

CVE CVE-2026-98130EUVD EUVD-2026-86961Published 2026-09-25T10:36:10.000ZLast changed 2026-09-25T14:42:10.000ZCVSS 8.1

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: sctp: fix a TOCTOU race in SCTP_CMD_TIMER_START The SCTP_CMD_TIMER_START handler checks timer_pending() before calling timer_reduce(). The timer can expire and detach between these operations, causing timer_reduce() to rearm the timer without taking the association reference required for the newly armed timer. The timer callback later unconditionally drops its association reference, which can leave the association reference count unbalanced and result in use-after-free during association teardown. Use the return value of timer_reduce() to determine whether the timer was actually armed. Take the association reference only when timer_reduce() successfully starts a new timer, closing the race between checking the timer state and rearming it. This issue was reported by Nico Yip (@_cyeaa_) working with TrendAI Zero Day Initiative.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 70989e501fbce502198d82da88358ce453575a05; 9c0a4652f750afe3b4468cbcd9335b244ce2facd; 20a785aa52c82246055a089e55df9dac47d67da1 <2188569e7e1b0bc3f3b557dc97ab7a02befc11c8; 4.19.126 <4.20; patch: 7.3-rc2; 5.6.16 <5.7; patch: 6.18.53; 5.4.44 <5.5; patch: 7.2.7; 20a785aa52c82246055a089e55df9dac47d67da1 <e42ba56281ca3ae2dcb3558bebee9a1c9a4831d9; 5.7; 20a785aa52c82246055a089e55df9dac47d67da1 <00b841bac10230c557be6b38efc48508198fe23e; 20a785aa52c82246055a089e55df9dac47d67da1 <3d698d1e6c8bc41e3e1707777a016f1bdd07842d; patch: 6.12.111; 085bb270b4b1168c93afb37bbafc881207d15443; patch: 0

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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