CVE-2026-93802wifi: rsi: validate beacon length before fixed buffer copy
- —Not scoredno CVSS score yet
- 0.17%Exploitation in 30 daysEPSS · top 93% 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: rsi: validate beacon length before fixed buffer copy rsi_prepare_beacon() copies the mac80211 beacon frame after FRAME_DESC_SZ into a management skb whose usable tailroom may be smaller than MAX_MGMT_PKT_SIZE after alignment. Validate the beacon length against the actual tailroom before the copy and skb_put(). Leave ownership of the management skb with the caller on error, matching the existing rsi_send_beacon() cleanup path.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 9 days later
· 9 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)
- 0.17% · top 93% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected d26a9559403c7c3ec3b430f5825bc22c3d40abdb – < 795ba65f46fe44061f1195951c122cc8ec685d44
- affected d26a9559403c7c3ec3b430f5825bc22c3d40abdb – < 66a964432b2758a4cf69962366e37581d6e70632
- affected d26a9559403c7c3ec3b430f5825bc22c3d40abdb – < 7f99742c3c2801f8033d8b7a0a58254d7f24fb1e
- affected d26a9559403c7c3ec3b430f5825bc22c3d40abdb – < f08d7f3c916335a0e539f1c45c130615967fac47
- affected d26a9559403c7c3ec3b430f5825bc22c3d40abdb – < 87710ad633ce4588aec88611d0d0745eb33a6991
- affected d26a9559403c7c3ec3b430f5825bc22c3d40abdb – < 266f195d5a14eec6c482fd09fbc924584c3371a7
- affected d26a9559403c7c3ec3b430f5825bc22c3d40abdb – < 8ecdeb8b8a33b22c597299043c0dcfce50beb9ea
- affected 4.14
- unaffected < 4.14
- unaffected 5.10.271 – ≤ 5.10.*
- unaffected 5.15.222 – ≤ 5.15.*
- unaffected 6.1.189 – ≤ 6.1.*
- unaffected 6.6.158 – ≤ 6.6.*
- unaffected 6.12.111 – ≤ 6.12.*
- unaffected 6.18.53 – ≤ 6.18.*
- unaffected 7.2 – ≤ *
References
References7
- https://git.kernel.org/stable/c/795ba65f46fe44061f1195951c122cc8ec685d44 (opens in a new tab)
- https://git.kernel.org/stable/c/66a964432b2758a4cf69962366e37581d6e70632 (opens in a new tab)
- https://git.kernel.org/stable/c/7f99742c3c2801f8033d8b7a0a58254d7f24fb1e (opens in a new tab)
- https://git.kernel.org/stable/c/f08d7f3c916335a0e539f1c45c130615967fac47 (opens in a new tab)
- https://git.kernel.org/stable/c/87710ad633ce4588aec88611d0d0745eb33a6991 (opens in a new tab)
- https://git.kernel.org/stable/c/266f195d5a14eec6c482fd09fbc924584c3371a7 (opens in a new tab)
- https://git.kernel.org/stable/c/8ecdeb8b8a33b22c597299043c0dcfce50beb9ea (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-2026-86189 (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-2026-93802)Record last updated .