#VU104422 Use-after-free in Linux kernel - CVE-2022-49426
Published: February 26, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU104422
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-49426
CWE-ID: CWE-416
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 escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the arm_smmu_alloc_shared_cd(), kfree() and arm_smmu_free_shared_cd() functions in drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/9aa215450888cf29af0c479e14a712dc6b0c506c
- https://git.kernel.org/stable/c/cbd23144f7662b00bcde32a938c4a4057e476d68
- https://git.kernel.org/stable/c/e3cbbdbff8a4db5d053c53fd71be62ccccdb52b0
- https://git.kernel.org/stable/c/fc90f13ea0dcd960e5002d204fa55cec4e0db2fa
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.46