SB20240603207 - Improper error handling in Linux kernel iommu driver
Published: June 3, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240603207
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper error handling (CVE-ID: CVE-2021-47327)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper error handling within the arm_smmu_rpm_get() function in drivers/iommu/arm-smmu.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/3761ae0d0e549f2acdaf11f49df4ed06d256b20f
- https://git.kernel.org/stable/c/c4007596fbdabc29f858dc2e1990858a146b60b2
- https://git.kernel.org/stable/c/fbf4daa6f4105e01fbd3868006f65c163365c1e3
- https://git.kernel.org/stable/c/fe92c058199067ae90cf2a901ddf3c271893557a
- https://git.kernel.org/stable/c/1adf30f198c26539a62d761e45af72cde570413d
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.52
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.19
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.134