Input validation error in Linux kernel cpu mce

1) Input validation error

EUVDB-ID: #VU104728

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-2022-49124

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 quirk_sandybridge_ifu(), do_machine_check() and __mcheck_cpu_apply_quirks() functions in arch/x86/kernel/cpu/mce/core.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.17 - 5.17.2

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:5.17:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.17:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.17:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.17:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.17:rc4:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.17:rc5:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.17:rc6:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.17:rc7:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.17:rc8:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.17:rc9:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/8ca97812c3c830573f965a07bbd84223e8c5f5bd
https://git.kernel.org/stable/c/ba37c73be3d5632f6fb9fa20b250ce45560ca85d
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.3

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.