IT

Tracker / CVE-2026-98130

CVE-2026-98130

High 8.1

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.

Affected products and versions

linux linux_kernel
linux linux_kernel · 4.19.126 → 4.20
linux linux_kernel · 5.11 → 5.15.222
linux linux_kernel · 5.16 → 6.1.189
linux linux_kernel · 5.4.44 → 5.5
linux linux_kernel · 5.6.16 → 5.7
linux linux_kernel · 5.7.1 → 5.10.271
linux linux_kernel · 6.13 → 6.18.53
linux linux_kernel · 6.19 → 7.2.7
linux linux_kernel · 6.2 → 6.6.158
linux linux_kernel · 6.7 → 6.12.111

Analysis

This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.

References