CVE-2026-89749

CVE CVE-2026-89749EUVD EUVD-2026-76661Published 2026-09-11T19:46:53.000ZLast changed 2026-09-14T12:02:28.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix crash passing ERR_PTR to kthread_stop() event_test_stuff() calls kthread_run() and unconditionally passes the returned task_struct pointer to kthread_stop(). kthread_run() returns an error pointer such as ERR_PTR(-ENOMEM) when kthread creation fails, for example under memory pressure during the boot-time event self-test. kthread_stop() then dereferences the invalid pointer, crashing the kernel. Check the result of kthread_run() before passing it to kthread_stop(). Use WARN_ON() so that a failure to create the self-test thread does not go unnoticed, matching the ring-buffer self-test fix in commit 91542863abad ("ring-buffer: Fix crash passing ERR_PTR to kthread_stop()").

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 e6187007d6c365b551c69ea3df46f06fd1c8bd19 <adadf4192f700bca82abfda9fa6d58c0bf37cc04; e6187007d6c365b551c69ea3df46f06fd1c8bd19 <649bc7df3e5d7be6f7996a95084037dbf3cad1e5; 2.6.31; e6187007d6c365b551c69ea3df46f06fd1c8bd19 <c40e0b4fa365969e67011529eabdfb66d1022256; patch: 0; e6187007d6c365b551c69ea3df46f06fd1c8bd19 <c1a4fb7aa290f158d50654d640292e49d9055fd1; patch: 7.3-rc1; patch: 5.10.270; patch: 6.1.188; e6187007d6c365b551c69ea3df46f06fd1c8bd19 <42ccb215ef0a552acbbd32f81009bfe4b278ba77; e6187007d6c365b551c69ea3df46f06fd1c8bd19 <98d06fb9865a490e12ebe32d65b9ffac6108614d; e6187007d6c365b551c69ea3df46f06fd1c8bd19 <ceb1707aef5824cf024eb82d10787b7621e2ff35; e6187007d6c365b551c69ea3df46f06fd1c8bd19 <12a499f741fc5be3731c8b0a0d909406575cc2eb; patch: 5.15.221; patch: 6.12.109; patch: 6.6.157; patch: 7.2.4; patch: 6.18.50

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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