Description
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 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
6ea0a69ca21bbddab5b3979c2190013b0263e749 to < 6eb181a64fdabf10be9e54de728876667da20255affected6ea0a69ca21bbddab5b3979c2190013b0263e749 to < e0ff39448cea654843744c72c6780293c5082cb1affected6ea0a69ca21bbddab5b3979c2190013b0263e749 to < 78a07732fbb0934d14827d8f09b9aa6a49ee1aa9affected6ea0a69ca21bbddab5b3979c2190013b0263e749 to < 9ad48cbf8b07f10c1e4a7a262b32a9179ae9dd2daffected6ea0a69ca21bbddab5b3979c2190013b0263e749 to < 4abc8c07a065ecf771827bde3c63fbbe4aa0c08baffected6ea0a69ca21bbddab5b3979c2190013b0263e749 to < 5d20c6f932f2758078d0454729129c894fe353e7affected6ea0a69ca21bbddab5b3979c2190013b0263e749 to < c0445feb80a4d0854898118fa01073701f8d356baffected6ea0a69ca21bbddab5b3979c2190013b0263e749 to < 60deb9f10eec5c6a20252ed36238b55d8b614a2caffected
Linux Linux
Default version status: affected
3.19affected0 to < 3.19unaffected4.9.330 to ≤ 4.9.*unaffected4.14.295 to ≤ 4.14.*unaffected4.19.260 to ≤ 4.19.*unaffected5.4.215 to ≤ 5.4.*unaffected5.10.142 to ≤ 5.10.*unaffected5.15.66 to ≤ 5.15.*unaffected5.19.8 to ≤ 5.19.*unaffected6.0 to ≤ *unaffected
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 ↗