#VU102111 NULL pointer dereference in Linux kernel - CVE-2024-56617

Vulnerability identifier: #VU102111

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-2024-56617

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 last_level_cache_is_valid(), populate_cache_leaves() and init_level_allocate_ci() functions in drivers/base/cacheinfo.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/23b5908b11b77ff8d7b8f7b8f11cbab2e1f4bfc2
https://git.kernel.org/stable/c/95e197354e0de07e9a20819bdae6562e4dda0f20
https://git.kernel.org/stable/c/b3fce429a1e030b50c1c91351d69b8667eef627b

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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.