#VU94968 NULL pointer dereference in Linux kernel - CVE-2024-42079

Vulnerability identifier: #VU94968

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-42079

CWE-ID: CWE-476

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 perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the gfs2_jindex_free() function in fs/gfs2/super.c, within the lops_before_commit() function in fs/gfs2/log.c. A local user can perform a denial of service (DoS) attack.

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/3429ef5f50909cee9e498c50f0c499b9397116ce
https://git.kernel.org/stable/c/f54f9d5368a4e92ede7dd078a62788dae3a7c6ef
https://git.kernel.org/stable/c/35264909e9d1973ab9aaa2a1b07cda70f12bb828

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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.