CVE-2026-53182

wifi: nl80211: reject oversized EMA RNR lists

EPSS 0.2%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

25 Jun 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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().

Affected products

Linux · Linux

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

https://git.kernel.org/stable/c/265c07c09c837621730d35f02975207a1224bf05 https://git.kernel.org/stable/c/30c3fa80f423613efdda3deca4af52ff7d20e4e2 https://git.kernel.org/stable/c/4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1 https://git.kernel.org/stable/c/688fcac7054abc680c0eef753f2bb772cfaf8cf7 https://git.kernel.org/stable/c/ecbf3c45add30a0857414e156bdb9c79906f0ff6 https://git.kernel.org/stable/c/fc0ec2fc02dfe52c5821f36fbccf6a45df43f508