Vulnerability details
CVE-2026-53182
Linux Linux
wifi: nl80211: reject oversized EMA RNR lists
CVSS 3.1
7.8High
Official description
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 scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 6.4 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 56189d7bc30531def6b999f27940ee43c6ff2569 ≤ v < fc0ec2fc02dfe52c5821f36fbccf6a45df43f508 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6.1.160 ≤ v < 6.1.176 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | dbbb27e183b1568d5a907ace1cd144b0709ea52a ≤ v < 30c3fa80f423613efdda3deca4af52ff7d20e4e2 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | dbbb27e183b1568d5a907ace1cd144b0709ea52a ≤ v < 265c07c09c837621730d35f02975207a1224bf05 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | dbbb27e183b1568d5a907ace1cd144b0709ea52a ≤ v < ecbf3c45add30a0857414e156bdb9c79906f0ff6 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | dbbb27e183b1568d5a907ace1cd144b0709ea52a ≤ v < 4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | dbbb27e183b1568d5a907ace1cd144b0709ea52a ≤ v < 688fcac7054abc680c0eef753f2bb772cfaf8cf7 | CVEProject cvelistV5 (CNA) |
References and advisories
6- https://git.kernel.org/stable/c/fc0ec2fc02dfe52c5821f36fbccf6a45df43f508
- https://git.kernel.org/stable/c/688fcac7054abc680c0eef753f2bb772cfaf8cf7
- https://git.kernel.org/stable/c/30c3fa80f423613efdda3deca4af52ff7d20e4e2
- https://git.kernel.org/stable/c/265c07c09c837621730d35f02975207a1224bf05
- https://git.kernel.org/stable/c/ecbf3c45add30a0857414e156bdb9c79906f0ff6
- https://git.kernel.org/stable/c/4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1
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Details
- Published
- 2026-06-25
- Last updated
- 2026-10-19
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.13%
Probability of exploitation in 30 days
2.6%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-190Integer Overflow or Wraparound