#VU93447 Input validation error in Linux kernel - CVE-2024-36918

Vulnerability identifier: #VU93447

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-2024-36918

CWE-ID: CWE-20

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 input validation within the test_fail_cases() function in tools/testing/selftests/bpf/prog_tests/bloom_filter_map.c, within the bloom_map_get_next_key() and bloom_map_check_btf() functions in kernel/bpf/bloom_filter.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/fa6995eeb62e74b5a1480c73fb7b420c270784d3
https://git.kernel.org/stable/c/608e13706c8b6c658a0646f09ebced74ec367f7c
https://git.kernel.org/stable/c/c418afb9bf23e2f2b76cb819601e4a5d9dbab42d
https://git.kernel.org/stable/c/a8d89feba7e54e691ca7c4efc2a6264fa83f3687

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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.