CVE-2026-53182
wifi: nl80211: reject oversized EMA RNR lists
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().
INFO
Published Date :
June 25, 2026, 9:16 a.m.
Last Modified :
July 6, 2026, 12:43 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel to a fixed version.
- Apply patches addressing nl80211_parse_rnr_elems input handling.
- Ensure EMA RNR lists do not exceed the 255 element limit.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-53182.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-53182 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-53182
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-53182 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-53182 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Jul. 06, 2026
Action Type Old Value New Value Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.36 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.94 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.13 *cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.4 up to (excluding) 6.6.143 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.1.160 up to (excluding) 6.1.176 Added Reference Type kernel.org: https://git.kernel.org/stable/c/265c07c09c837621730d35f02975207a1224bf05 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/30c3fa80f423613efdda3deca4af52ff7d20e4e2 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/688fcac7054abc680c0eef753f2bb772cfaf8cf7 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/ecbf3c45add30a0857414e156bdb9c79906f0ff6 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/fc0ec2fc02dfe52c5821f36fbccf6a45df43f508 Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 28, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 25, 2026
Action Type Old Value New Value Added Affected [{'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'}] Added 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(). Added Reference https://git.kernel.org/stable/c/265c07c09c837621730d35f02975207a1224bf05 Added Reference https://git.kernel.org/stable/c/30c3fa80f423613efdda3deca4af52ff7d20e4e2 Added Reference https://git.kernel.org/stable/c/4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1 Added Reference https://git.kernel.org/stable/c/688fcac7054abc680c0eef753f2bb772cfaf8cf7 Added Reference https://git.kernel.org/stable/c/ecbf3c45add30a0857414e156bdb9c79906f0ff6 Added Reference https://git.kernel.org/stable/c/fc0ec2fc02dfe52c5821f36fbccf6a45df43f508