CVE-2023-51779 Use after free in n/a
A race condition in the Linux kernel Bluetooth subsystem allows attackers to trigger a use-after-free, potentially leading to code execution or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-51779?
CVE-2023-51779 is a high-severity use after free vulnerability in n/a, published on 25 Dec 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
bt_sock_recvmsg in net/bluetooth/af_bluetooth.c in the Linux kernel through 6.6.8 has a use-after-free because of a bt_sock_ioctl race condition.
Weakness: CWE-416
Which versions are affected by CVE-2023-51779?
Linux distribution packages (3)
kgraft-patch-SLE12-SP5_Update_40 SUSE:Linux Enterprise Live Patching 12 SP5 | All versions | 13-2.3 |
kgraft-patch-SLE12-SP5_Update_47 SUSE:Linux Enterprise Live Patching 12 SP5 | All versions | 7-2.2 |
kgraft-patch-SLE12-SP5_Update_48 SUSE:Linux Enterprise Live Patching 12 SP5 | All versions | 6-2.2 |
How do I fix CVE-2023-51779?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2023-51779 being exploited?
There is no known exploitation of CVE-2023-51779 in the wild and no public exploit code.
Sources
Also known as AZL-35478, BELL-CVE-2023-51779, DEBIAN-CVE-2023-51779, GHSA-w3hv-rwgr-crx3, SUSE-SU-2024:1025-1, SUSE-SU-2024:1028-1 and 2 more.