NULL pointer dereference in Linux kernel f2fs

1) NULL pointer dereference

EUVDB-ID: #VU96119

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-2024-43859

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

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 f2fs_set_inode_flags() function in fs/f2fs/inode.c, within the f2fs_file_mmap() and f2fs_file_open() functions in fs/f2fs/file.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/f44a25a8bfe0c15d33244539696cd9119cf44d18
https://git.kernel.org/stable/c/3ba0ae885215b325605ff7ebf6de12ac2adf204d
https://git.kernel.org/stable/c/298b1e4182d657c3e388adcc29477904e9600ed5

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.