#VU91377 Division by zero in Linux kernel - CVE-2024-26777

Vulnerability identifier: #VU91377

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-2024-26777

CWE-ID: CWE-369

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 a division by zero error within the sisfb_check_var() function in drivers/video/fbdev/sis/sis_main.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/84246c35ca34207114055a87552a1c4289c8fd7e
https://git.kernel.org/stable/c/6db07619d173765bd8622d63809cbfe361f04207
https://git.kernel.org/stable/c/cd36da760bd1f78c63c7078407baf01dd724f313
https://git.kernel.org/stable/c/df6e2088c6f4cad539cf67cba2d6764461e798d1
https://git.kernel.org/stable/c/f329523f6a65c3bbce913ad35473d83a319d5d99
https://git.kernel.org/stable/c/99f1abc34a6dde248d2219d64aa493c76bbdd9eb
https://git.kernel.org/stable/c/1d11dd3ea5d039c7da089f309f39c4cd363b924b
https://git.kernel.org/stable/c/e421946be7d9bf545147bea8419ef8239cb7ca52

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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.