5.5

CVE-2026-64174: linux

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-64174DEBIAN-CVE-2026-64174
Published 19-07-2026Last modified 19-07-2026
Open JSON

Vulnerability summary

CVE-2026-64174 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.6% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.12%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 45 · Related 44
OPENSUSE-SU-2026:21555-1RHSA-2026:68570SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23193-1SUSE-SU-2026:23194-1

Timeline

  1. 19-07-2026
    PublishedVulnerability first disclosed.

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: advance loop vars in cfg80211_merge_profile() cfg80211_merge_profile() reassembles a Multi-BSSID non-transmitted BSS profile that has been split across multiple consecutive MBSSID elements. Its while-loop calls cfg80211_get_profile_continuation(ie, ielen, mbssid_elem, sub_elem) but never advances mbssid_elem or sub_elem inside the body. Each iteration therefore searches for a continuation that follows the same fixed pair; the helper returns the same next_mbssid; and the same next_sub bytes are memcpy()'d into merged_ie at a growing offset until the buffer fills. Advance both mbssid_elem and sub_elem to the just-consumed continuation so the next call to cfg80211_get_profile_continuation() searches for a further continuation beyond it (or returns NULL when none exists). A specially-crafted malicious beacon can take advantage of this bug to cause the kernel to spend an excessive amount of time in cfg80211_merge_profile (up to as much as 2ms per beacon received), which could theoretically be abused in some way.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.12%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.12% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.12%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu163 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-139.139 | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1064.67 | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ fe806e4992c9047affd263bcc13b2c047029a726, < 5817e1e5205498a5df66eba2b34e817f4210fd0f | ≥ fe806e4992c9047affd263bcc13b2c047029a726, < cedbb608494ba1e7a5c6c56b7f1d3fd470094f28 | ≥ fe806e4992c9047affd263bcc13b2c047029a726, < c0bc4c8bd556cbe036a5b9ed333c0aab9aadfcb8 | ≥ fe806e4992c9047affd263bcc13b2c047029a726, < 1ced0f5a851f9cae274545a42a06c459b7fd8881 | ≥ fe806e4992c9047affd263bcc13b2c047029a726, < 67915715fd3874057457363c87c63e18829527df | ≥ fe806e4992c9047affd263bcc13b2c047029a726, < 6cfae4914439878b8acb35c7e3b40096eeb2ad9c | ≥ fe806e4992c9047affd263bcc13b2c047029a726, < 1343a480f84b80c1249133a90ef87f8751d65cbb | ≥ fe806e4992c9047affd263bcc13b2c047029a726, < 7666dbb1bacc4ba522b96740cba7283d243d16e1 | 5.2
  • linux_kernel≥ 5.2, < 5.10.258 | ≥ 5.11, < 5.15.209 | ≥ 5.16, < 6.1.175 | ≥ 6.2, < 6.6.142 | ≥ 6.7, < 6.12.92 | ≥ 6.13, < 6.18.34 | ≥ 6.19, < 7.0.11 | 7.1:rc1 | 7.1:rc2 | 7.1:rc3 | 7.1:rc4
Debian1 product
  • linux< 6.1.176-1 | < 6.12.94-1 | < 7.0.12-1

3 vendors · 166 products

References

44 links
Show all 44 references