Description
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()").
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
e6187007d6c365b551c69ea3df46f06fd1c8bd19 to < c1a4fb7aa290f158d50654d640292e49d9055fd1affectede6187007d6c365b551c69ea3df46f06fd1c8bd19 to < 42ccb215ef0a552acbbd32f81009bfe4b278ba77affectede6187007d6c365b551c69ea3df46f06fd1c8bd19 to < 98d06fb9865a490e12ebe32d65b9ffac6108614daffectede6187007d6c365b551c69ea3df46f06fd1c8bd19 to < ceb1707aef5824cf024eb82d10787b7621e2ff35affectede6187007d6c365b551c69ea3df46f06fd1c8bd19 to < 12a499f741fc5be3731c8b0a0d909406575cc2ebaffectede6187007d6c365b551c69ea3df46f06fd1c8bd19 to < adadf4192f700bca82abfda9fa6d58c0bf37cc04affectede6187007d6c365b551c69ea3df46f06fd1c8bd19 to < c40e0b4fa365969e67011529eabdfb66d1022256affectede6187007d6c365b551c69ea3df46f06fd1c8bd19 to < 649bc7df3e5d7be6f7996a95084037dbf3cad1e5affected
Linux Linux
Default version status: affected
2.6.31affected0 to < 2.6.31unaffected5.10.270 to ≤ 5.10.*unaffected5.15.221 to ≤ 5.15.*unaffected6.1.188 to ≤ 6.1.*unaffected6.6.157 to ≤ 6.6.*unaffected6.12.109 to ≤ 6.12.*unaffected6.18.50 to ≤ 6.18.*unaffected7.2.4 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/c1a4fb7aa290f158d50654d640292e49d9055fd1 ↗
- https://git.kernel.org/stable/c/42ccb215ef0a552acbbd32f81009bfe4b278ba77 ↗
- https://git.kernel.org/stable/c/98d06fb9865a490e12ebe32d65b9ffac6108614d ↗
- https://git.kernel.org/stable/c/ceb1707aef5824cf024eb82d10787b7621e2ff35 ↗
- https://git.kernel.org/stable/c/12a499f741fc5be3731c8b0a0d909406575cc2eb ↗
- https://git.kernel.org/stable/c/adadf4192f700bca82abfda9fa6d58c0bf37cc04 ↗
- https://git.kernel.org/stable/c/c40e0b4fa365969e67011529eabdfb66d1022256 ↗
- https://git.kernel.org/stable/c/649bc7df3e5d7be6f7996a95084037dbf3cad1e5 ↗