Input validation error in Linux kernel bpf

1) Input validation error

EUVDB-ID: #VU93447

Risk: Low

CVSSv3.1: 4.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-36918

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

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

External links

http://git.kernel.org/stable/c/fa6995eeb62e74b5a1480c73fb7b420c270784d3
http://git.kernel.org/stable/c/608e13706c8b6c658a0646f09ebced74ec367f7c
http://git.kernel.org/stable/c/c418afb9bf23e2f2b76cb819601e4a5d9dbab42d
http://git.kernel.org/stable/c/a8d89feba7e54e691ca7c4efc2a6264fa83f3687

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.