Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: Fix UAF in ieee80211_scan_rx() ieee80211_scan_rx() tries to access scan_req->flags after a null check, but a UAF is observed when the scan is completed and __ieee80211_scan_completed() executes, which then calls cfg80211_scan_done() leading to the freeing of scan_req. Since scan_req is rcu_dereference()'d, prevent the racing in __ieee80211_scan_completed() by ensuring that from mac80211's POV it is no longer accessed from an RCU read critical section before we call cfg80211_scan_done().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 6ea0a69ca21bbddab5b3979c2190013b0263e749 before 6eb181a64fdabf10be9e54de728876667da20255; affected 6ea0a69ca21bbddab5b3979c2190013b0263e749 before e0ff39448cea654843744c72c6780293c5082cb1; affected 6ea0a69ca21bbddab5b3979c2190013b0263e749 before 78a07732fbb0934d14827d8f09b9aa6a49ee1aa9; affected 6ea0a69ca21bbddab5b3979c2190013b0263e749 before 9ad48cbf8b07f10c1e4a7a262b32a9179ae9dd2d; affected 6ea0a69ca21bbddab5b3979c2190013b0263e749 before 4abc8c07a065ecf771827bde3c63fbbe4aa0c08b; affected 6ea0a69ca21bbddab5b3979c2190013b0263e749 before 5d20c6f932f2758078d0454729129c894fe353e7; affected 6ea0a69ca21bbddab5b3979c2190013b0263e749 before c0445feb80a4d0854898118fa01073701f8d356b; affected 6ea0a69ca21bbddab5b3979c2190013b0263e749 before 60deb9f10eec5c6a20252ed36238b55d8b614a2c |
| Linux / Linux | affected 3.19; unaffected 0 before 3.19; unaffected 4.9.330 through 4.9.*; unaffected 4.14.295 through 4.14.*; unaffected 4.19.260 through 4.19.*; unaffected 5.4.215 through 5.4.*; unaffected 5.10.142 through 5.10.*; unaffected 5.15.66 through 5.15.*; unaffected 5.19.8 through 5.19.*; unaffected 6.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/6eb181a64fdabf10be9e54de728876667da20255
- https://git.kernel.org/stable/c/e0ff39448cea654843744c72c6780293c5082cb1
- https://git.kernel.org/stable/c/78a07732fbb0934d14827d8f09b9aa6a49ee1aa9
- https://git.kernel.org/stable/c/9ad48cbf8b07f10c1e4a7a262b32a9179ae9dd2d
- https://git.kernel.org/stable/c/4abc8c07a065ecf771827bde3c63fbbe4aa0c08b
- https://git.kernel.org/stable/c/5d20c6f932f2758078d0454729129c894fe353e7
- https://git.kernel.org/stable/c/c0445feb80a4d0854898118fa01073701f8d356b
- https://git.kernel.org/stable/c/60deb9f10eec5c6a20252ed36238b55d8b614a2c