#VU90386 NULL pointer dereference in Linux kernel - CVE-2024-36925

Vulnerability identifier: #VU90386

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-2024-36925

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 rmem_swiotlb_device_init() function in kernel/dma/swiotlb.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/f2a6b3ed20f2dea4cb645abc6a73c4595662adca
https://git.kernel.org/stable/c/f62e0fefcdfe2c05ccb1aa80521a69524eea9c84
https://git.kernel.org/stable/c/75961ffb5cb3e5196f19cae7683f35cc88b50800

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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.