CVE-2025-39864
HIGH severity · CVSS 8.8 · Use-after-free
8.8CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorAdjacent
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (2)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/26e84445f02ce6b2fe5f3e0e28ff7add77f35e08 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/26e84445f02ce6b2fe5f3e0e28ff7add77f35e08Patch
- https://git.kernel.org/stable/c/5b7ae04969f822283a95c866967e42b4d75e0eefPatch
- https://git.kernel.org/stable/c/6854476d9e1aeaaf05ebc98d610061c2075db07dPatch
- https://git.kernel.org/stable/c/912c4b66bef713a20775cfbf3b5e9bd71525c716Patch
- https://git.kernel.org/stable/c/a8bb681e879ca3c9f722aa08d3d7ae41c42a8807Patch
- https://git.kernel.org/stable/c/a97a9791e455bb0cd5e7a38b5abcb05523d4e21cPatch
- https://git.kernel.org/stable/c/b7d08929178c16398278613df07ad65cf63cce9dPatch
- https://git.kernel.org/stable/c/ff040562c10a540b8d851f7f4145fa112977f853Patch