Improper error handling in Linux kernel

1) Improper error handling

EUVDB-ID: #VU90934

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-2023-52831

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 cpu_down_maps_locked() function in kernel/cpu.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

External links

http://git.kernel.org/stable/c/3410b702354702b500bde10e3cc1f9db8731d908
http://git.kernel.org/stable/c/335a47ed71e332c82339d1aec0c7f6caccfcda13
http://git.kernel.org/stable/c/3073f6df783d9d75f7f69f73e16c7ef85d6cfb63
http://git.kernel.org/stable/c/38685e2a0476127db766f81b1c06019ddc4c9ffa

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.