Use-after-free in Linux kernel bluetooth

1) Use-after-free

EUVDB-ID: #VU90058

Risk: Low

CVSSv3.1: 7.7 [AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-36012

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the msft_monitor_supported() function in net/bluetooth/msft.h, within the msft_register() function in net/bluetooth/msft.c, within the hci_unregister_dev() and hci_release_dev() functions in net/bluetooth/hci_core.c. A local user can escalate privileges on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

External links

http://git.kernel.org/stable/c/e3880b531b68f98d3941d83f2f6dd11cf4fd6b76
http://git.kernel.org/stable/c/a85a60e62355e3bf4802dead7938966824b23940
http://git.kernel.org/stable/c/4f1de02de07748da80a8178879bc7a1df37fdf56
http://git.kernel.org/stable/c/10f9f426ac6e752c8d87bf4346930ba347aaabac

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.