Use-after-free in Linux kernel block

1) Use-after-free

EUVDB-ID: #VU102053

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-2024-53182

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 bfq_put_cooperator(), bfq_exit_bfqq() and bfq_split_bfqq() functions in block/bfq-iosched.c, within the bfq_sync_bfqq_move() function in block/bfq-cgroup.c. A local user can escalate privileges on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.12 - 6.12.1

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:6.12:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.12.1:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/7baf94232651f39f7108c23bc9548bff89bdc77b
https://git.kernel.org/stable/c/cf5a60d971c7b59efb89927919404be655a9e35a
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.2
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13

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.