#VU102020 Use-after-free in Linux kernel - CVE-2024-56605

Vulnerability identifier: #VU102020

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-56605

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

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 l2cap_sock_alloc() function in net/bluetooth/l2cap_sock.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/61686abc2f3c2c67822aa23ce6f160467ec83d35
https://git.kernel.org/stable/c/7c4f78cdb8e7501e9f92d291a7d956591bf73be9
https://git.kernel.org/stable/c/8ad09ddc63ace3950ac43db6fbfe25b40f589dd6
https://git.kernel.org/stable/c/a8677028dd5123e5e525b8195483994d87123de4
https://git.kernel.org/stable/c/bb2f2342a6ddf7c04f9aefbbfe86104cd138e629
https://git.kernel.org/stable/c/daa13175a6dea312a76099066cb4cbd4fc959a84
https://git.kernel.org/stable/c/f6ad641646b67f29c7578dcd6c25813c7dcbf51e

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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.