CVE-2026-53182
HIGH severity · CVSS 7.8
7.8CVSS HIGH
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: nl80211: reject oversized EMA RNR lists nl80211_parse_rnr_elems() stores the parsed element count in a u8-backed cfg80211_rnr_elems::cnt field and uses that count to size the flexible array allocation. Reject nested NL80211_ATTR_EMA_RNR_ELEMS input once the count reaches 255, before incrementing it again. This keeps the parser aligned with the data structure it fills and matches the existing bound check used by nl80211_parse_mbssid_elems().
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/265c07c09c837621730d35f02975207a1224bf05 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/265c07c09c837621730d35f02975207a1224bf05Patch
- https://git.kernel.org/stable/c/30c3fa80f423613efdda3deca4af52ff7d20e4e2Patch
- https://git.kernel.org/stable/c/4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1Patch
- https://git.kernel.org/stable/c/688fcac7054abc680c0eef753f2bb772cfaf8cf7Patch
- https://git.kernel.org/stable/c/ecbf3c45add30a0857414e156bdb9c79906f0ff6Patch
- https://git.kernel.org/stable/c/fc0ec2fc02dfe52c5821f36fbccf6a45df43f508Patch