#VU90593 NULL pointer dereference in Linux kernel - CVE-2024-26731

Vulnerability identifier: #VU90593

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-2024-26731

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 sk_psock_verdict_data_ready() function in net/core/skmsg.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/4588b13abcbd561ec67f5b3c1cb2eff690990a54
https://git.kernel.org/stable/c/9b099ed46dcaf1403c531ff02c3d7400fa37fa26
https://git.kernel.org/stable/c/d61608a4e394f23e0dca099df9eb8e555453d949
https://git.kernel.org/stable/c/4cd12c6065dfcdeba10f49949bffcf383b3952d8

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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.