#VU94442 NULL pointer dereference in Linux kernel - CVE-2022-48795
Published: July 17, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU94442
Vulnerability risk: Low
CVSSv4.0: 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-2022-48795
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
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 sba_unmap_sg() function in drivers/parisc/sba_iommu.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/f23f0444ead4d941165aa82ce2fcbb997dc00e97
- https://git.kernel.org/stable/c/de75676ee99bf9f25b1124ff301b3f7b8ba597d4
- https://git.kernel.org/stable/c/867e50231c7605547d9334904d70a181f39f2d9e
- https://git.kernel.org/stable/c/efccc9b0c7e28d0eb7918a236e59f60dc23db4c3
- https://git.kernel.org/stable/c/f8f519d7df66c334b5e08f896ac70ee3b53add3b
- https://git.kernel.org/stable/c/8c8e949ae81e7f5ab58f9f9f8e9b573b93173dd2
- https://git.kernel.org/stable/c/e40ae3133ed87d6d526f3c8fc6a5f9a2d72dcdbf
- https://git.kernel.org/stable/c/b7d6f44a0fa716a82969725516dc0b16bc7cd514
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.268
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.231
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.303
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.102
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.25
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.181