CVE-2026-68196wifi: wilc1000: validate assoc response length before subtracting header
- 8.3HighCVSS base score
- 0.41%Exploitation in 30 daysEPSS · top 64% 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: wilc1000: validate assoc response length before subtracting header wilc_parse_assoc_resp_info() computes the trailing IE length as ies_len = buffer_len - sizeof(*res); without first checking that buffer_len is at least sizeof(struct wilc_assoc_resp) (6 bytes). buffer_len is the length reported for a received association response (host_int_parse_assoc_resp_info() passes hif_drv->assoc_resp / assoc_resp_info_len straight in) and must be validated before the driver accesses the fixed header. For a frame shorter than the 6-byte fixed header, the subtraction wraps. For a four-byte response the result is truncated to a u16 ies_len of 65534, so kmemdup() then attempts to copy 65534 bytes starting at buffer + sizeof(*res), beyond the valid association-response data (CWE-125). A response shorter than four bytes can also cause an out-of-bounds read of res->status_code at offsets 2 and 3. Reject frames too short to hold the fixed header before touching the header or computing ies_len. Also set the connection status to a failure on this path: the caller falls through to a "conn_info->status == WLAN_STATUS_SUCCESS" check after the parser returns, so leaving the status untouched could let a malformed short response be treated as a successful association.
Timeline
ID reserved
By Linux
- 11 days later
· 11 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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.3 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H |
| NVDNVD · Received | 3.1 | High8.3 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H |
- EPSS (exploitation in 30 days)
- 0.41% · top 64% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.3.
Affected products
- affected c5c77ba18ea66aa05441c71e38473efb787705a4 – < d79b92417f33424ff23dad76716ed8f2cefb1083
- affected c5c77ba18ea66aa05441c71e38473efb787705a4 – < b81d0ea9e1daa215b3da68c1f4f6fb07940c2f6a
- affected c5c77ba18ea66aa05441c71e38473efb787705a4 – < 8d50acf5420de0c4da99c2d634731c9d3164a755
- affected c5c77ba18ea66aa05441c71e38473efb787705a4 – < 584c8954ad55f8b09b475be6db710fe40ceb988c
- affected c5c77ba18ea66aa05441c71e38473efb787705a4 – < 4d410320e8ae5933e651660c9fadc1d380309e23
- affected c5c77ba18ea66aa05441c71e38473efb787705a4 – < e511e93abd6eeedcd5b3c55516241f414fbde64a
- affected c5c77ba18ea66aa05441c71e38473efb787705a4 – < 8ccdf8c8de87a9580df37c3c1ec53ba88cedef65
- affected c5c77ba18ea66aa05441c71e38473efb787705a4 – < 4c4c97b60a5e978121d9ee8cb0ab3916e5d6a8de
- affected 4.2
- unaffected < 4.2
- 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/d79b92417f33424ff23dad76716ed8f2cefb1083 (opens in a new tab)
- https://git.kernel.org/stable/c/b81d0ea9e1daa215b3da68c1f4f6fb07940c2f6a (opens in a new tab)
- https://git.kernel.org/stable/c/8d50acf5420de0c4da99c2d634731c9d3164a755 (opens in a new tab)
- https://git.kernel.org/stable/c/584c8954ad55f8b09b475be6db710fe40ceb988c (opens in a new tab)
- https://git.kernel.org/stable/c/4d410320e8ae5933e651660c9fadc1d380309e23 (opens in a new tab)
- https://git.kernel.org/stable/c/e511e93abd6eeedcd5b3c55516241f414fbde64a (opens in a new tab)
- https://git.kernel.org/stable/c/8ccdf8c8de87a9580df37c3c1ec53ba88cedef65 (opens in a new tab)
- https://git.kernel.org/stable/c/4c4c97b60a5e978121d9ee8cb0ab3916e5d6a8de (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-2026-55297 (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-2026-68196)Record last updated .