CVE-2026-93149wifi: mac80211_hwsim: avoid NULL skb in stop queue drain
- —Not scoredno CVSS score yet
- 0.21%Exploitation in 30 daysEPSS · top 89% 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_hwsim: avoid NULL skb in stop queue drain mac80211_hwsim_stop() drops any frames left in data->pending. The loop currently checks skb_queue_empty() and then dequeues separately. That split is racy with TX status handling, which can remove a pending frame under the queue lock. If the last entry is removed after the empty check, skb_dequeue() returns NULL and the stop path passes that NULL skb to ieee80211_free_txskb(). Use skb_dequeue() as the loop condition instead. The dequeue result is the object that stop owns and frees, and a concurrent status completion that empties the queue simply makes the loop terminate.
Timeline
ID reserved
By Linux
Published
- 32 days later
· 32 days 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
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.21% · top 89% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected bd18de517923903a177508fc8813f44e717b1c00 – < d131027054a8dd922dda01fe8d381abe5af4970b
- affected bd18de517923903a177508fc8813f44e717b1c00 – < c40ba47f2ba1951cb32ea048667ed014d36a5749
- affected bd18de517923903a177508fc8813f44e717b1c00 – < 2817431a61557f46dc63077b7cc126bc906c242e
- affected bd18de517923903a177508fc8813f44e717b1c00 – < e7fccad2c8e6ef6bbafe509c95869d161d0f466b
- affected bd18de517923903a177508fc8813f44e717b1c00 – < 1c2a4ab6efa26415dd131b8c222e7893fda03435
- affected bd18de517923903a177508fc8813f44e717b1c00 – < 158438cd6ad69d6dd7d871582c38baf22169fede
- affected 78bf3c6131488b00386acd9aff1ea4e6c44fa38e
- affected a9028333001f793b2724e8be42fce3336de2cf1c
- affected 7019c9f385b264a2d6f685028268422d55087e37
- affected 5.4.129 – < 5.5
- affected 5.10.47 – < 5.11
- affected 5.12.14 – < 5.13
- affected 5.13
- unaffected < 5.13
- unaffected 6.1.188 – ≤ 6.1.*
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.52 – ≤ 6.18.*
- unaffected 7.2.6 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References6
- https://git.kernel.org/stable/c/d131027054a8dd922dda01fe8d381abe5af4970b (opens in a new tab)
- https://git.kernel.org/stable/c/c40ba47f2ba1951cb32ea048667ed014d36a5749 (opens in a new tab)
- https://git.kernel.org/stable/c/2817431a61557f46dc63077b7cc126bc906c242e (opens in a new tab)
- https://git.kernel.org/stable/c/e7fccad2c8e6ef6bbafe509c95869d161d0f466b (opens in a new tab)
- https://git.kernel.org/stable/c/1c2a4ab6efa26415dd131b8c222e7893fda03435 (opens in a new tab)
- https://git.kernel.org/stable/c/158438cd6ad69d6dd7d871582c38baf22169fede (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-2026-82257 (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-2026-93149)Record last updated .