Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected e6187007d6c365b551c69ea3df46f06fd1c8bd19 before c1a4fb7aa290f158d50654d640292e49d9055fd1; affected e6187007d6c365b551c69ea3df46f06fd1c8bd19 before 42ccb215ef0a552acbbd32f81009bfe4b278ba77; affected e6187007d6c365b551c69ea3df46f06fd1c8bd19 before 98d06fb9865a490e12ebe32d65b9ffac6108614d; affected e6187007d6c365b551c69ea3df46f06fd1c8bd19 before ceb1707aef5824cf024eb82d10787b7621e2ff35; affected e6187007d6c365b551c69ea3df46f06fd1c8bd19 before 12a499f741fc5be3731c8b0a0d909406575cc2eb; affected e6187007d6c365b551c69ea3df46f06fd1c8bd19 before adadf4192f700bca82abfda9fa6d58c0bf37cc04; affected e6187007d6c365b551c69ea3df46f06fd1c8bd19 before c40e0b4fa365969e67011529eabdfb66d1022256; affected e6187007d6c365b551c69ea3df46f06fd1c8bd19 before 649bc7df3e5d7be6f7996a95084037dbf3cad1e5 |
| Linux / Linux | affected 2.6.31; unaffected 0 before 2.6.31; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.109 through 6.12.*; unaffected 6.18.50 through 6.18.*; unaffected 7.2.4 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
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