CVE-2026-68353wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler
- 8.1HighCVSS base score
- 0.29%Exploitation in 30 daysEPSS · top 79% 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 read from firmware num_msg in TX complete handler The firmware-controlled num_msg field (u8, 0-255) drives the loop in ath6kl_wmi_tx_complete_event_rx() without validation against the buffer length. This allows out-of-bounds reads of up to 1020 bytes past the WMI event buffer when the firmware sends an inflated num_msg. Add a check that the buffer is large enough to hold the fixed struct and the num_msg variable-length entries.
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 | High8.1 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
| NVDNVD · Received | 3.1 | High8.1 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.29% · top 79% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.
Affected products
- affected bdcd81707973cf8aa9305337166f8ee842a050d4 – < 5297299c3fa6133275db0be99d69cd759b6cbfe9
- affected bdcd81707973cf8aa9305337166f8ee842a050d4 – < 35196a07603f8c94a4943093bc26d5b5826285f8
- affected bdcd81707973cf8aa9305337166f8ee842a050d4 – < 0e0fc04af9b443c6b425f00fb604ff599bc80d1d
- affected bdcd81707973cf8aa9305337166f8ee842a050d4 – < 69ac7ba3a3df6654e7daa82674575a8c4a1a63ea
- affected bdcd81707973cf8aa9305337166f8ee842a050d4 – < 289edc3c71344b89e6522891147cfb8f61b088bb
- affected bdcd81707973cf8aa9305337166f8ee842a050d4 – < eb636fbc443149b3501c3f97e26225ddcb314a0f
- affected bdcd81707973cf8aa9305337166f8ee842a050d4 – < c38b0d5c661951b5dd082bdf31f8a57a0ce6e540
- affected bdcd81707973cf8aa9305337166f8ee842a050d4 – < 3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495
- 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/5297299c3fa6133275db0be99d69cd759b6cbfe9 (opens in a new tab)
- https://git.kernel.org/stable/c/35196a07603f8c94a4943093bc26d5b5826285f8 (opens in a new tab)
- https://git.kernel.org/stable/c/0e0fc04af9b443c6b425f00fb604ff599bc80d1d (opens in a new tab)
- https://git.kernel.org/stable/c/69ac7ba3a3df6654e7daa82674575a8c4a1a63ea (opens in a new tab)
- https://git.kernel.org/stable/c/289edc3c71344b89e6522891147cfb8f61b088bb (opens in a new tab)
- https://git.kernel.org/stable/c/eb636fbc443149b3501c3f97e26225ddcb314a0f (opens in a new tab)
- https://git.kernel.org/stable/c/c38b0d5c661951b5dd082bdf31f8a57a0ce6e540 (opens in a new tab)
- https://git.kernel.org/stable/c/3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495 (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-2026-55454 (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-2026-68353)Record last updated .