Vulnerability identifier: #VU92309

Vulnerability 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-2024-38570

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 gfs2_gl_hash_clear() function in fs/gfs2/super.c, within the init_sbd() function in fs/gfs2/ops_fstype.c, within the gdlm_ast(), gdlm_bast() and gdlm_put_lock() functions in fs/gfs2/lock_dlm.c, within the glock_blocked_by_withdraw() and gfs2_gl_hash_clear() functions in fs/gfs2/glock.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://git.kernel.org/stable/c/0636b34b44589b142700ac137b5f69802cfe2e37
http://git.kernel.org/stable/c/e42e8a24d7f02d28763d16ca7ec5fc6d1f142af0
http://git.kernel.org/stable/c/501cd8fabf621d10bd4893e37f6ce6c20523c8ca
http://git.kernel.org/stable/c/d98779e687726d8f8860f1c54b5687eec5f63a73

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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.