Improper error handling in Linux kernel ext4

1) Improper error handling

EUVDB-ID: #VU104744

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-2022-49708

CWE-ID: CWE-388 - Error Handling

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper error handling within the ext4_mb_normalize_request() function in fs/ext4/mballoc.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/5707d721d1819db57dba57b1d4623034fcb32047
https://git.kernel.org/stable/c/6880fb2e64331b9fdc85d3f32b1d7e81ad8703f1
https://git.kernel.org/stable/c/6fdaf31ad5f3d3afab744dfd9a8b0d9142aa881f
https://git.kernel.org/stable/c/887a3e9ad4b8309a2266bce7ae749b2bf1f7a687
https://git.kernel.org/stable/c/90f0f9d45dff0128c0fca0d2358c4153b024afa6
https://git.kernel.org/stable/c/a08f789d2ab5242c07e716baf9a835725046be89
https://git.kernel.org/stable/c/a37c1359714da42517dd19d36fc3c4d17edba832
https://git.kernel.org/stable/c/a6b31616e5afe1d3972cb0682a373e50597faf5c

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.