CVE-2025-39864 — Use After Free in Linux
Severity
7.8HIGHNVD
EPSS
0.0%
top 96.30%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedSep 19
Latest updateApr 9
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9
Affected Packages3 packages
▶CVEListV5linux/linux3ab8227d3e7d1d2bf1829675d3197e3cb600e9f6 — a8bb681e879ca3c9f722aa08d3d7ae41c42a8807+8
Also affects: Debian Linux 11.0
Patches
🔴Vulnerability Details
3GHSA▶
GHSA-mrpv-wrf5-7wr6: In the Linux kernel, the following vulnerability has been resolved:
wifi: cfg80211: fix use-after-free in cmp_bss()
Following bss_free() quirk intro↗2025-09-22
OSV▶
CVE-2025-39864: In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: fix use-after-free in cmp_bss() Following bss_free() quirk introdu↗2025-09-19