#VU90663 NULL pointer dereference in Linux kernel - CVE-2024-26590

Vulnerability identifier: #VU90663

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-2024-26590

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 z_erofs_do_map_blocks() function in fs/erofs/zmap.c, within the z_erofs_parse_cfgs() function in fs/erofs/decompressor.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/823ba1d2106019ddf195287ba53057aee33cf724
https://git.kernel.org/stable/c/eed24b816e50c6cd18cbee0ff0d7218c8fced199
https://git.kernel.org/stable/c/118a8cf504d7dfa519562d000f423ee3ca75d2c4
https://git.kernel.org/stable/c/47467e04816cb297905c0f09bc2d11ef865942d9

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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.