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CVE-2025-39957

wifi: mac80211: increase scan_ies_len for S1G

HIGH
7.8
CVSS Score
Published: October 9, 2025 at 09:47 AM UTC
Updated: October 19, 2026 at 09:10 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
6.13 ≤ v < 6.16.96.4 ≤ v < 6.6.1086.7 ≤ v < 6.12.49333a81bc83431d7f90391d38aa9e856c5e5b256.176.17 rc16.17 rc26.17 rc36.17 rc4
Vendor states this is fixed in 0dbad5f5549e54ac269cc04ce89f212892a98cab (fixed)
Vendor states this is fixed in 32adb020b0c32939da1322dcc87fc0ae2bc935d1 (fixed)
Vendor states this is fixed in 7e2f3213e85eba00acb4cfe6d71647892d63c3a1 (fixed)
Vendor states this is fixed in 93e063f15e17acb8cd6ac90c8f0802c2624e1a74 (fixed)
Vendor states this is fixed in 6.12.49 (unaffected)
Vendor states this is fixed in 6.16.9 (unaffected)
Vendor states this is fixed in 6.17 (unaffected)
Vendor states this is fixed in 6.4 (unaffected)
Vendor states this is fixed in 6.6.108 (unaffected)

References (5)

Source: cverecord
https://git.kernel.org/stable/c/16c9244a62116fe148f6961753b68e7160799f97
Patch
Source: cverecord
https://git.kernel.org/stable/c/93e063f15e17acb8cd6ac90c8f0802c2624e1a74
Patch
Source: cverecord
https://git.kernel.org/stable/c/32adb020b0c32939da1322dcc87fc0ae2bc935d1
Patch
Source: cverecord
https://git.kernel.org/stable/c/0dbad5f5549e54ac269cc04ce89f212892a98cab
Patch
Source: cverecord
https://git.kernel.org/stable/c/7e2f3213e85eba00acb4cfe6d71647892d63c3a1

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGH[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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