CVE-2022-49934wifi: mac80211: Fix UAF in ieee80211_scan_rx()
- 8.8HighCVSS base score
- 0.24%Exploitation in 30 daysEPSS · top 84% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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().
Timeline
ID reserved
By Linux
- 48 days later
· 48 days later
Published
- 14 months later
· 14 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.24% · top 84% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
- affected 6ea0a69ca21bbddab5b3979c2190013b0263e749 – < 6eb181a64fdabf10be9e54de728876667da20255
- affected 6ea0a69ca21bbddab5b3979c2190013b0263e749 – < e0ff39448cea654843744c72c6780293c5082cb1
- affected 6ea0a69ca21bbddab5b3979c2190013b0263e749 – < 78a07732fbb0934d14827d8f09b9aa6a49ee1aa9
- affected 6ea0a69ca21bbddab5b3979c2190013b0263e749 – < 9ad48cbf8b07f10c1e4a7a262b32a9179ae9dd2d
- affected 6ea0a69ca21bbddab5b3979c2190013b0263e749 – < 4abc8c07a065ecf771827bde3c63fbbe4aa0c08b
- affected 6ea0a69ca21bbddab5b3979c2190013b0263e749 – < 5d20c6f932f2758078d0454729129c894fe353e7
- affected 6ea0a69ca21bbddab5b3979c2190013b0263e749 – < c0445feb80a4d0854898118fa01073701f8d356b
- affected 6ea0a69ca21bbddab5b3979c2190013b0263e749 – < 60deb9f10eec5c6a20252ed36238b55d8b614a2c
- affected 3.19
- unaffected < 3.19
- unaffected 4.9.330 – ≤ 4.9.*
- unaffected 4.14.295 – ≤ 4.14.*
- unaffected 4.19.260 – ≤ 4.19.*
- unaffected 5.4.215 – ≤ 5.4.*
- unaffected 5.10.142 – ≤ 5.10.*
- unaffected 5.15.66 – ≤ 5.15.*
- unaffected 5.19.8 – ≤ 5.19.*
- unaffected 6.0 – ≤ *
References
References8
- https://git.kernel.org/stable/c/6eb181a64fdabf10be9e54de728876667da20255 (opens in a new tab)
- https://git.kernel.org/stable/c/e0ff39448cea654843744c72c6780293c5082cb1 (opens in a new tab)
- https://git.kernel.org/stable/c/78a07732fbb0934d14827d8f09b9aa6a49ee1aa9 (opens in a new tab)
- https://git.kernel.org/stable/c/9ad48cbf8b07f10c1e4a7a262b32a9179ae9dd2d (opens in a new tab)
- https://git.kernel.org/stable/c/4abc8c07a065ecf771827bde3c63fbbe4aa0c08b (opens in a new tab)
- https://git.kernel.org/stable/c/5d20c6f932f2758078d0454729129c894fe353e7 (opens in a new tab)
- https://git.kernel.org/stable/c/c0445feb80a4d0854898118fa01073701f8d356b (opens in a new tab)
- https://git.kernel.org/stable/c/60deb9f10eec5c6a20252ed36238b55d8b614a2c (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-55194 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2022-49934)Record last updated .