CVE-2026-68199wifi: ath6kl: fix OOB access from firmware ADDBA window size
- 8.8HighCVSS base score
- 0.38%Exploitation in 30 daysEPSS · top 67% 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: ath6kl: fix OOB access from firmware ADDBA window size aggr_recv_addba_req_evt() logs a debug message when the firmware-supplied win_sz is outside [AGGR_WIN_SZ_MIN, AGGR_WIN_SZ_MAX] but does not return. The out-of-range win_sz is then used in TID_WINDOW_SZ() to compute a kzalloc size and stored in rxtid->hold_q_sz, leading to zero-size or overflowed allocations and subsequent out-of-bounds access. Clean up any previously active aggregation session for the TID first, then return early when win_sz is out of the valid range, instead of proceeding with a broken allocation size.
Timeline
ID reserved
By Linux
- 11 days later
· 11 days later
Published
- 2 months later
· 2 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 · Received | 3.1 | High8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.38% · top 67% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
- affected bdcd81707973cf8aa9305337166f8ee842a050d4 – < c8e3ca7954d8233fbc54bd370c1827670f43c538
- affected bdcd81707973cf8aa9305337166f8ee842a050d4 – < f480d9910fcfe326db3a6281df80e83af347193e
- affected bdcd81707973cf8aa9305337166f8ee842a050d4 – < 67bc9af4f41f2bdba20404fbd753b2a1bd6dd352
- affected bdcd81707973cf8aa9305337166f8ee842a050d4 – < d4558c140782180e2c80a7588a4af9f8675adfc4
- affected bdcd81707973cf8aa9305337166f8ee842a050d4 – < 5a65fd4722416061698b0a3277222381efbc4882
- affected bdcd81707973cf8aa9305337166f8ee842a050d4 – < 58c6c8dc2e022e1b4f3dc58725a1ca49ff470f9c
- affected bdcd81707973cf8aa9305337166f8ee842a050d4 – < cec0a487cf38ac1f9bca240ffe8a94c5014b72f2
- affected bdcd81707973cf8aa9305337166f8ee842a050d4 – < 44126b6994eeb28f2103b638e698f40a1244f327
- affected 3.2
- unaffected < 3.2
- unaffected 5.10.265 – ≤ 5.10.*
- unaffected 5.15.216 – ≤ 5.15.*
- unaffected 6.1.183 – ≤ 6.1.*
- unaffected 6.6.148 – ≤ 6.6.*
- unaffected 6.12.101 – ≤ 6.12.*
- unaffected 6.18.42 – ≤ 6.18.*
- unaffected 7.1.6 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References8
- https://git.kernel.org/stable/c/c8e3ca7954d8233fbc54bd370c1827670f43c538 (opens in a new tab)
- https://git.kernel.org/stable/c/f480d9910fcfe326db3a6281df80e83af347193e (opens in a new tab)
- https://git.kernel.org/stable/c/67bc9af4f41f2bdba20404fbd753b2a1bd6dd352 (opens in a new tab)
- https://git.kernel.org/stable/c/d4558c140782180e2c80a7588a4af9f8675adfc4 (opens in a new tab)
- https://git.kernel.org/stable/c/5a65fd4722416061698b0a3277222381efbc4882 (opens in a new tab)
- https://git.kernel.org/stable/c/58c6c8dc2e022e1b4f3dc58725a1ca49ff470f9c (opens in a new tab)
- https://git.kernel.org/stable/c/cec0a487cf38ac1f9bca240ffe8a94c5014b72f2 (opens in a new tab)
- https://git.kernel.org/stable/c/44126b6994eeb28f2103b638e698f40a1244f327 (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-2026-55300 (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-2026-68199)Record last updated .