Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: wifi: brcmsmac: fix UAF in brcms_free_timer() brcms_free_timer() calls brcms_del_timer() which uses the non-synchronous cancel_delayed_work() to cancel the timer's underlying delayed work. If the work callback (_brcms_timer) is already running, cancel_delayed_work() returns false without waiting, and brcms_free_timer() proceeds to kfree(t) while the callback still accesses t through container_of(). Add an explicit cancel_delayed_work_sync() after brcms_del_timer() to guarantee that any in-flight callback has completed before the timer structure is freed.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 5b435de0d786869c95d1962121af0d7df2542009 before 10eeb0b29fd7f52487c9ae573e8d79c210a0095d; affected 5b435de0d786869c95d1962121af0d7df2542009 before 74acccc928851f69184271832d690607877122af; affected 5b435de0d786869c95d1962121af0d7df2542009 before 050d2486e8ed2c0a23b87249ccd23e8072721391; affected 5b435de0d786869c95d1962121af0d7df2542009 before 856dabd5f2617efb23c043be9e1b22a9e6e97c41; affected 5b435de0d786869c95d1962121af0d7df2542009 before 2a4841ff0b74b495cddd31ae324e922217fc2f13; affected 5b435de0d786869c95d1962121af0d7df2542009 before 1edb3ddd261e973a4d577c0547e63bfa25a8170d; affected 5b435de0d786869c95d1962121af0d7df2542009 before 777cb6bba59e875b16a1d8897a483a5fecfcd5d2; affected 5b435de0d786869c95d1962121af0d7df2542009 before 1eeca1d5e0920fbdad6449768fd2d4364e714180 |
| Linux / Linux | affected 3.2; unaffected 0 before 3.2; unaffected 5.10.271 through 5.10.*; unaffected 5.15.222 through 5.15.*; unaffected 6.1.189 through 6.1.*; unaffected 6.6.158 through 6.6.*; unaffected 6.12.112 through 6.12.*; unaffected 6.18.54 through 6.18.*; unaffected 7.2.8 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/10eeb0b29fd7f52487c9ae573e8d79c210a0095d
- https://git.kernel.org/stable/c/74acccc928851f69184271832d690607877122af
- https://git.kernel.org/stable/c/050d2486e8ed2c0a23b87249ccd23e8072721391
- https://git.kernel.org/stable/c/856dabd5f2617efb23c043be9e1b22a9e6e97c41
- https://git.kernel.org/stable/c/2a4841ff0b74b495cddd31ae324e922217fc2f13
- https://git.kernel.org/stable/c/1edb3ddd261e973a4d577c0547e63bfa25a8170d
- https://git.kernel.org/stable/c/777cb6bba59e875b16a1d8897a483a5fecfcd5d2
- https://git.kernel.org/stable/c/1eeca1d5e0920fbdad6449768fd2d4364e714180