NULL pointer dereference in Linux kernel iommu driver



| Updated: 2025-05-11
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-49083
CWE-ID CWE-476
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) NULL pointer dereference

EUVDB-ID: #VU104627

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-2022-49083

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to NULL pointer dereference within the omap_iommu_probe_device() function in drivers/iommu/omap-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: 5.16 - 5.16.19

CPE2.3 External links

https://git.kernel.org/stable/c/1d89f2b9eadbcf3ce93c6d7238f68299a1f84968
https://git.kernel.org/stable/c/47e239117bd97c8556f9187af7a9a7938db4e021
https://git.kernel.org/stable/c/71ff461c3f41f6465434b9e980c01782763e7ad8
https://git.kernel.org/stable/c/bd905fed87ce01ac010011bb8f44ed0140116ceb
https://git.kernel.org/stable/c/ea518578aa8a9a0280605b53cc33f707e10c8178
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.20


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.



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