High 7.8Published Jun 25, 2026

CVE-2026-53182wifi: nl80211: reject oversized EMA RNR lists

Updated under an hour ago (Oct 26, 2026, 2:30 PM ET)

This data is behind schedule: last updated Oct 26, 2026, 2:30 PM ET. We are working on it.Behind: CVE records (cvelistV5).

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Exploited in the last 30 days

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: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-190
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 56189d7bc30531def6b999f27940ee43c6ff2569 before fc0ec2fc02dfe52c5821f36fbccf6a45df43f508; from dbbb27e183b1568d5a907ace1cd144b0709ea52a before 688fcac7054abc680c0eef753f2bb772cfaf8cf7; from dbbb27e183b1568d5a907ace1cd144b0709ea52a before 30c3fa80f423613efdda3deca4af52ff7d20e4e2; from dbbb27e183b1568d5a907ace1cd144b0709ea52a before 265c07c09c837621730d35f02975207a1224bf05; from dbbb27e183b1568d5a907ace1cd144b0709ea52a before ecbf3c45add30a0857414e156bdb9c79906f0ff6; from dbbb27e183b1568d5a907ace1cd144b0709ea52a before 4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1; from 6.1.160 before 6.1.176	CNA record
linux linux_kernel linux:linux_kernel	from 6.1.160 before 6.1.176; from 6.4 before 6.6.143; from 6.7 before 6.12.94; from 6.13 before 6.18.36; from 6.19 before 7.0.13; 7.1; 7.1; 7.1; and 3 more ranges	NVD

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.