Input validation error in Linux kernel f2fs

1) Input validation error

EUVDB-ID: #VU102995

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-2024-41935

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 __grab_extent_tree(), __destroy_extent_node(), __update_extent_tree_range(), write_unlock(), __shrink_extent_tree(), f2fs_shrink_age_extent_tree(), f2fs_destroy_extent_node() and __drop_extent_tree() functions in fs/f2fs/extent_cache.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

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/295b50e95e900da31ff237e46e04525fa799b2cf
https://git.kernel.org/stable/c/3fc5d5a182f6a1f8bd4dc775feb54c369dd2c343
https://git.kernel.org/stable/c/924f7dd1e832e4e4530d14711db223d2803f7b61

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.