CVE-2025-39864

high

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: fix use-after-free in cmp_bss() Following bss_free() quirk introduced in commit 776b3580178f ("cfg80211: track hidden SSID networks properly"), adjust cfg80211_update_known_bss() to free the last beacon frame elements only if they're not shared via the corresponding 'hidden_beacon_bss' pointer.

References

https://git.kernel.org/stable/c/ff040562c10a540b8d851f7f4145fa112977f853

https://git.kernel.org/stable/c/b7d08929178c16398278613df07ad65cf63cce9d

https://git.kernel.org/stable/c/a97a9791e455bb0cd5e7a38b5abcb05523d4e21c

https://git.kernel.org/stable/c/a8bb681e879ca3c9f722aa08d3d7ae41c42a8807

https://git.kernel.org/stable/c/912c4b66bef713a20775cfbf3b5e9bd71525c716

https://git.kernel.org/stable/c/6854476d9e1aeaaf05ebc98d610061c2075db07d

https://git.kernel.org/stable/c/5b7ae04969f822283a95c866967e42b4d75e0eef

https://git.kernel.org/stable/c/26e84445f02ce6b2fe5f3e0e28ff7add77f35e08

Details

Source: Mitre, NVD

Published: 2025-09-19

Updated: 2025-09-22

Risk Information

CVSS v2

Base Score: 6.9

Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00024