CVE-2026-53182high

CVE-2026-53182: high-severity vulnerability in Linux

wifi: nl80211: reject oversized EMA RNR lists

Published · Updated

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.8epss 0.1%
exploitation probability
0.1%top 98% of all CVEs
observed exploitation
nono source reports it
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().
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · Linux
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References
https://git.kernel.org/stable/c/265c07c09c837621730d35f02975207a1224bf05https://git.kernel.org/stable/c/30c3fa80f423613efdda3deca4af52ff7d20e4e2https://git.kernel.org/stable/c/4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1https://git.kernel.org/stable/c/688fcac7054abc680c0eef753f2bb772cfaf8cf7https://git.kernel.org/stable/c/ecbf3c45add30a0857414e156bdb9c79906f0ff6https://git.kernel.org/stable/c/fc0ec2fc02dfe52c5821f36fbccf6a45df43f508