#VU99060 Improper error handling in Linux kernel - CVE-2022-49000

Vulnerability identifier: #VU99060

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-2022-49000

CWE-ID: CWE-388

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 improper error handling within the has_external_pci() function in drivers/iommu/intel/iommu.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/10ed7655a17f6a3eaecd1293830488259ccd5723
https://git.kernel.org/stable/c/b6eea8b2e858a20ad58ac62dc2de90fea2413f94
https://git.kernel.org/stable/c/17f67414718e6aba123335a33b7d15aa594fff34
https://git.kernel.org/stable/c/afca9e19cc720bfafc75dc5ce429c185ca93f31d

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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.