Vulnerability details
CVE-2022-49934
Linux Linux
wifi: mac80211: Fix UAF in ieee80211_scan_rx()
CVSS 3.1
8.8High
Official 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().
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.8High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 3.19 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6ea0a69ca21bbddab5b3979c2190013b0263e749 ≤ v < e0ff39448cea654843744c72c6780293c5082cb1 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6ea0a69ca21bbddab5b3979c2190013b0263e749 ≤ v < 78a07732fbb0934d14827d8f09b9aa6a49ee1aa9 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6ea0a69ca21bbddab5b3979c2190013b0263e749 ≤ v < 9ad48cbf8b07f10c1e4a7a262b32a9179ae9dd2d | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6ea0a69ca21bbddab5b3979c2190013b0263e749 ≤ v < 6eb181a64fdabf10be9e54de728876667da20255 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6ea0a69ca21bbddab5b3979c2190013b0263e749 ≤ v < 5d20c6f932f2758078d0454729129c894fe353e7 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6ea0a69ca21bbddab5b3979c2190013b0263e749 ≤ v < c0445feb80a4d0854898118fa01073701f8d356b | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6ea0a69ca21bbddab5b3979c2190013b0263e749 ≤ v < 60deb9f10eec5c6a20252ed36238b55d8b614a2c | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6ea0a69ca21bbddab5b3979c2190013b0263e749 ≤ v < 4abc8c07a065ecf771827bde3c63fbbe4aa0c08b | CVEProject cvelistV5 (CNA) |
References and advisories
8- 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
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Details
- Published
- 2025-06-18
- Last updated
- 2026-08-05
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.23%
Probability of exploitation in 30 days
14.4%
Percentile (among all CVEs)
Weaknesses (CWE)
- —