CVE-2025-39957

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 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 4% of CVEs (scores of 2026-10-25)

Published

2025-10-09

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/0dbad5f5549e54ac269cc04ce89f212892a98cab
• https://git.kernel.org/stable/c/32adb020b0c32939da1322dcc87fc0ae2bc935d1
• https://git.kernel.org/stable/c/7e2f3213e85eba00acb4cfe6d71647892d63c3a1
• https://git.kernel.org/stable/c/93e063f15e17acb8cd6ac90c8f0802c2624e1a74

Check your stackJSON