#VU104535 Out-of-bounds read in Linux kernel - CVE-2022-49154

Vulnerability identifier: #VU104535

Vulnerability 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-2022-49154

CWE-ID: CWE-125

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

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

The vulnerability exists due to an out-of-bounds read error within the svm_update_pi_irte() function in arch/x86/kvm/svm/avic.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

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External links
https://git.kernel.org/stable/c/0fb470eb48892e131d10aa3be6915239e65758f3
https://git.kernel.org/stable/c/3fa2d747960521a646fc1aad7aea82e95e139a68
https://git.kernel.org/stable/c/a6ffdebfb6a9c2ffeed902b544b96fe67498210e
https://git.kernel.org/stable/c/a80ced6ea514000d34bf1239d47553de0d1ee89e
https://git.kernel.org/stable/c/e4d153d53d9648513481eb4ef8c212e7f1f8173d

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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.