#VU93329 NULL pointer dereference in Linux kernel - CVE-2024-39371

Vulnerability identifier: #VU93329

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-2024-39371

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 io_ring_buffer_select() function in io_uring/kbuf.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/c2844d5e58576c55d8e8d4a9f74902d3f7be8044
https://git.kernel.org/stable/c/43cfac7b88adedfb26c27834386992650f1642f3
https://git.kernel.org/stable/c/65561b4c1c9e01443cb76387eb36a9109e7048ee
https://git.kernel.org/stable/c/5fc16fa5f13b3c06fdb959ef262050bd810416a2

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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.