#VU102167 Improper locking in Linux kernel - CVE-2024-56592

Vulnerability identifier: #VU102167

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-2024-56592

CWE-ID: CWE-667

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 improper locking within the htab_elem_free(), free_htab_elem(), alloc_htab_elem(), htab_map_update_elem(), htab_map_delete_elem() and prealloc_lru_pop() functions in kernel/bpf/hashtab.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/10e8a2dec9ff1b81de8e892b0850924038adbc6d
https://git.kernel.org/stable/c/a50b4aa3007e63a590d501341f304676ebc74b3b
https://git.kernel.org/stable/c/b9e9ed90b10c82a4e9d4d70a2890f06bfcdd3b78

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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.