CVE-2026-98348wifi: libipw: reject too-short association responses
- 7.1HighCVSS base score
- 0.25%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: libipw: reject too-short association responses libipw_handle_assoc_resp() reads the capability, status and aid fields of the 30-byte association response prefix and then computes the information element length as stats->len - sizeof(*frame) stats->len is a u16 and sizeof() has type size_t, so the subtraction is evaluated as size_t and wraps instead of going negative. Truncating that to the u16 length parameter of libipw_parse_info_param() turns a frame shorter than the fixed fields into a length near 64 KiB, and the parser then reads past the receive buffer. Both the ipw2100 and ipw2200 management receive paths reach this function having established only that the frame carries the generic 24-byte three-address header. Reject the frame before any fixed field is touched. Found by an AI-assisted review of length arithmetic in management frame parsers. Verified with a KUnit case under Generic KASAN on arm64 under QEMU; I do not have the hardware, so it is not tested on a real device.
Timeline
ID reserved
By Linux
- 11 days later
· 11 days later
Published
- 13 days later
· 13 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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.1 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H |
| NVDNVD · Received | 3.1 | High7.1 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.25% · top 84% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Affected products
- affected 9e8571affd1c54b9638b4ff9844e47aae07310f6 – < 766268b429ae26d8ca599031fa962b0fe4673120
- affected 9e8571affd1c54b9638b4ff9844e47aae07310f6 – < d70bdb84cf1782039384c1ffa7a18b0303c286a7
- affected 9e8571affd1c54b9638b4ff9844e47aae07310f6 – < 400b89217058fac672134a0d4092c8493dadb8ad
- affected 9e8571affd1c54b9638b4ff9844e47aae07310f6 – < 46aa75291056b6dc5faaf956dffdb3e9662477b0
- affected 9e8571affd1c54b9638b4ff9844e47aae07310f6 – < e3025ecdb2057f866c09e059fc1466e81d6f243e
- affected 9e8571affd1c54b9638b4ff9844e47aae07310f6 – < 14cb425ba1f3a5d849e3bbc3d02d84e0ae195dbb
- affected 9e8571affd1c54b9638b4ff9844e47aae07310f6 – < af1b69be19c34e28c0ae54bee954b58cd076969a
- affected 9e8571affd1c54b9638b4ff9844e47aae07310f6 – < adb7118b7d2cfd7e8213c17d7d2829f353017754
- affected 2.6.15
- unaffected < 2.6.15
- 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 6.12.112 – ≤ 6.12.*
- unaffected 6.18.54 – ≤ 6.18.*
- unaffected 7.2.8 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/766268b429ae26d8ca599031fa962b0fe4673120 (opens in a new tab)
- https://git.kernel.org/stable/c/d70bdb84cf1782039384c1ffa7a18b0303c286a7 (opens in a new tab)
- https://git.kernel.org/stable/c/400b89217058fac672134a0d4092c8493dadb8ad (opens in a new tab)
- https://git.kernel.org/stable/c/46aa75291056b6dc5faaf956dffdb3e9662477b0 (opens in a new tab)
- https://git.kernel.org/stable/c/e3025ecdb2057f866c09e059fc1466e81d6f243e (opens in a new tab)
- https://git.kernel.org/stable/c/14cb425ba1f3a5d849e3bbc3d02d84e0ae195dbb (opens in a new tab)
- https://git.kernel.org/stable/c/af1b69be19c34e28c0ae54bee954b58cd076969a (opens in a new tab)
- https://git.kernel.org/stable/c/adb7118b7d2cfd7e8213c17d7d2829f353017754 (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-2026-93333 (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-2026-98348)Record last updated .