SB20250226239 - Use-after-free in Linux kernel arm arm-smmu-v3 driver
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250226239
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2022-49426)
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.
References
- 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