wifi: nl80211: reject oversized EMA RNR lists
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().
CVE-2026-53182
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-53182
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "56189d7bc30531def6b999f27940ee43c6ff2569",
"lessThan": "fc0ec2fc02dfe52c5821f36fbccf6a45df43f508",
"versionType": "git"
},
{
"status": "affected",
"version": "dbbb27e183b1568d5a907ace1cd144b0709ea52a",
"lessThan": "688fcac7054abc680c0eef753f2bb772cfaf8cf7",
"versionType": "git"
},
{
"status": "affected",
"version": "dbbb27e183b1568d5a907ace1cd144b0709ea52a",
"lessThan": "30c3fa80f423613efdda3deca4af52ff7d20e4e2",
"versionType": "git"
},
{
"status": "affected",
"version": "dbbb27e183b1568d5a907ace1cd144b0709ea52a",
"lessThan": "265c07c09c837621730d35f02975207a1224bf05",
"versionType": "git"
},
{
"status": "affected",
"version": "dbbb27e183b1568d5a907ace1cd144b0709ea52a",
"lessThan": "ecbf3c45add30a0857414e156bdb9c79906f0ff6",
"versionType": "git"
},
{
"status": "affected",
"version": "dbbb27e183b1568d5a907ace1cd144b0709ea52a",
"lessThan": "4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1",
"versionType": "git"
},
{
"status": "affected",
"version": "6.1.160",
"lessThan": "6.1.176",
"versionType": "semver"
}
],
"programFiles": [
"net/wireless/nl80211.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.4"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.4",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.176",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.143",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.94",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.36",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.13",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/wireless/nl80211.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-53182
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40764 · Revision 1
- Added to Heist Feed
- Publisher date