CVE-2026-23462HIGH 8.8EPSS p18.0%
CVE-2026-23462CVE-2026-23462
linux / linux_kernel
Description
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: HIDP: Fix possible UAF
This fixes the following trace caused by not dropping l2cap_conn
reference when user->remove callback is called:
[ 97.809249] l2cap_conn_free: freeing conn ffff88810a171c00
[ 97.809907] CPU: 1 UID: 0 PID: 1419 Comm: repro_standalon Not tainted 7.0.0-rc1-dirty #14 PREEMPT(lazy)
[ 97.809935] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-debian-1.17.0-1 04/01/2014
[ 97.809947] Call Trace:
[ 97.809954] <TASK>
[ 97.809961] dump_stack_lvl (lib/dump_stack.c:122)
[ 97.809990] l2cap_conn_free (net/bluetooth/l2cap_core.c:1808)
[ 97.810017] l2cap_conn_del (./include/linux/kref.h:66 net/bluetooth/l2cap_core.c:1821 net/bluetooth/l2cap_core.c:1798)
[ 97.810055] l2cap_disconn_cfm (net/bluetooth/l2cap_core.c:7347 (discriminator 1) net/bluetooth/l2cap_core.c:7340 (discriminator 1))
[ 97.810086] ? __pfx_l2cap_disconn_cfm (net/bluetooth/l2cap_core.c:7341)
Scoring
| CVSS 3.1 | 8.8 (HIGH) |
| Vector | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 0.26% probability of exploitation · percentile 18.0% · 2026-08-03T12:00:16Z |
| Published | 2026-04-03 |
| Last modified | 2026-07-24 |
Underlying weaknesses· 1
References
- https://git.kernel.org/stable/c/18b1263ece6431bd78fa6b61faaef5281203741c
- https://git.kernel.org/stable/c/21a47a119f33df9bb157326846390d7e8e1b45ba
- https://git.kernel.org/stable/c/45ebe5b900200ac3e01f3470506a44a447825721
- https://git.kernel.org/stable/c/4d37fa7582aa960ba23e10a7a2596a29f37ad281
- https://git.kernel.org/stable/c/7c805b7d1e580eececcc92470292e3dbc42bc3f5
- https://git.kernel.org/stable/c/d955ccbf91ab74d76fe9e4eab2846a7d8a173075
- https://git.kernel.org/stable/c/dbf666e4fc9bdd975a61bf682b3f75cb0145eedd
- https://git.kernel.org/stable/c/f8b6ed2f06d3baa44f347a0fa2af52433f386463
1
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Use After Freecwe-416 | 0% | live |
Related by meaning· 6
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