7.8

CVE-2025-39957: wifi: mac80211: increase scan_ies_len for S1G

Modified
AliasesUBUNTU-CVE-2025-39957DEBIAN-CVE-2025-39957
Published 09-10-2025Last modified 15-10-2026

Vulnerability summary

CVE-2025-39957 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.7% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.1, 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 (NVD)
EPSS score
0.16%
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 29 · Related 25
DLA-4379-1DSA-6053-1MGASA-2025-0309MGASA-2025-0310OPENSUSE-SU-2025:20081-1SUSE-SU-2025:21040-1

Timeline

  1. 09-10-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: increase scan_ies_len for S1G Currently the S1G capability element is not taken into account for the scan_ies_len, which leads to a buffer length validation failure in ieee80211_prep_hw_scan() and subsequent WARN in __ieee80211_start_scan(). This prevents hw scanning from functioning. To fix ensure we accommodate for the S1G capability length.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.15% 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

No weakness data has been published for this record.

Affected systems

Version check

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

Ubuntu122 products
  • linux< 6.8.0-106.106
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1050.53
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 0333a81bc83431d7f90391d38aa09e856c5e5b25, < 93e063f15e17acb8cd6ac90c8f0802c2624e1a74 | ≥ 0333a81bc83431d7f90391d38aa09e856c5e5b25, < 32adb020b0c32939da1322dcc87fc0ae2bc935d1 | ≥ 0333a81bc83431d7f90391d38aa09e856c5e5b25, < 0dbad5f5549e54ac269cc04ce89f212892a98cab | ≥ 0333a81bc83431d7f90391d38aa09e856c5e5b25, < 7e2f3213e85eba00acb4cfe6d71647892d63c3a1 | 6.4
  • linux_kernel≥ 6.4, < 6.6.108 | ≥ 6.7, < 6.12.49 | ≥ 6.13, < 6.16.9 | 6.17:rc1 | 6.17:rc2 | 6.17:rc3 | 6.17:rc4
Debian1 product
  • linux< 6.1.158-1 | < 6.12.57-1 | < 6.16.9-1

3 vendors · 125 products

References

19 links
Show all 19 references