CVE-2025-39860 — 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:
Bluetooth: Fix use-after-free in l2cap_sock_cleanup_listen()
syzbot reported the splat below without a repro.
In the splat, a single thread calling bt_accept_dequeue() freed sk
and touched it after that.
The root cause would be the racy l2cap_sock_cleanup_listen() call
added by the cited commit.
bt_accept_dequeue() is called under lock_sock() except for
l2cap_sock_release().
Two threads could see the same socket during the…
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/linuxa2da00d1ea1abfb04f846638e210b5b5166e3c9c — 964cbb198f9c46c2b2358cd1faffc04c1e8248cf+11
Also affects: Debian Linux 11.0
Patches
🔴Vulnerability Details
3GHSA▶
GHSA-c684-q9wg-vhh9: In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: Fix use-after-free in l2cap_sock_cleanup_listen()
syzbot reported the↗2025-09-22
OSV▶
CVE-2025-39860: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix use-after-free in l2cap_sock_cleanup_listen() syzbot reported the s↗2025-09-19