#VU102905 Use-after-free in Linux kernel - CVE-2024-57892

Vulnerability identifier: #VU102905

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-2024-57892

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 brelse() function in fs/ocfs2/quota_local.c, within the ocfs2_get_next_id() function in fs/ocfs2/quota_global.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/2e3d203b1adede46bbba049e497765d67865be18
https://git.kernel.org/stable/c/5f3fd772d152229d94602bca243fbb658068a597
https://git.kernel.org/stable/c/ba950a02d8d23811aa1120affd3adedcfac6153d

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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.