7.8

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

Modified
AliasesUBUNTU-CVE-2026-53182DEBIAN-CVE-2026-53182CGA-2wxw-67p7-m8hv
Published 25-06-2026Last modified 19-10-2026

Vulnerability summary

CVE-2026-53182 is a high (CVSS 7.8) Integer Overflow or Wraparound vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.13%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 152 · Related 148
MGASA-2026-0312OPENSUSE-SU-2026:21555-1RHSA-2026:65334RHSA-2026:67150RHSA-2026:67468RHSA-2026:67469

Showing 100 of 153.

Timeline

  1. 25-06-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

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 metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.13% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu141 products
  • linux< 6.8.0-146.146 | All versions (No fix recorded) | < 7.0.0-31.31
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1066.69 | All versions (No fix recorded) | < 7.0.0-1012.12
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard12 products
  • linux-aws-6.12< 6.12.95-r0
  • linux-aws-6.18< 6.18.38-r0
  • linux-azure-6.18< 6.18.38-r0
  • linux-gcp-6.12< 6.12.95-r0
  • linux-gcp-6.18< 6.18.38-r0
Linux2 products
  • linux≥ 56189d7bc30531def6b999f27940ee43c6ff2569, < fc0ec2fc02dfe52c5821f36fbccf6a45df43f508 | ≥ dbbb27e183b1568d5a907ace1cd144b0709ea52a, < 688fcac7054abc680c0eef753f2bb772cfaf8cf7 | ≥ dbbb27e183b1568d5a907ace1cd144b0709ea52a, < 30c3fa80f423613efdda3deca4af52ff7d20e4e2 | ≥ dbbb27e183b1568d5a907ace1cd144b0709ea52a, < 265c07c09c837621730d35f02975207a1224bf05 | ≥ dbbb27e183b1568d5a907ace1cd144b0709ea52a, < ecbf3c45add30a0857414e156bdb9c79906f0ff6 | ≥ dbbb27e183b1568d5a907ace1cd144b0709ea52a, < 4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1 | ≥ 6.1.160, < 6.1.176 | 6.4
  • linux_kernel≥ 6.1.160, < 6.1.176 | ≥ 6.4, < 6.6.143 | ≥ 6.7, < 6.12.94 | ≥ 6.13, < 6.18.36 | ≥ 6.19, < 7.0.13 | 7.1:rc1 | 7.1:rc2 | 7.1:rc3 | 7.1:rc4 | 7.1:rc5 | 7.1:rc6
Debian1 product
  • linux< 6.1.176-1 | < 6.12.94-1 | < 7.0.13-1

4 vendors · 156 products

References

31 links
Show all 31 references