SB20251226167 - Out-of-bounds read in Linux kernel powerpc kernel
Published: December 26, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251226167
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) Out-of-bounds read (CVE-ID: CVE-2023-54095)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to an out-of-bounds read error within the fail_iommu_bus_notify() function in arch/powerpc/kernel/iommu.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/075a4dcdbc9a5ea793cb8ec8b78a6c0b7636fd52
- https://git.kernel.org/stable/c/65bf8a196ba25cf65a858b5bb8de80f0aad76691
- https://git.kernel.org/stable/c/6670c65bf863cd0d44ca24d4c10ef6755b8d9529
- https://git.kernel.org/stable/c/a9ddbfed53465bc7c411231db32a488066c0c1be
- https://git.kernel.org/stable/c/c37b6908f7b2bd24dcaaf14a180e28c9132b9c58
- https://git.kernel.org/stable/c/c46af58588253e5e4063bb5ddc78cd12fdf9e55d
- https://git.kernel.org/stable/c/dc0d107e624ca96aef6dd8722eb33ba3a6d157b0
- https://git.kernel.org/stable/c/f08944e3c6962b00827de7263a9e20688e79ad84
- https://git.kernel.org/stable/c/f17d5efaafba3d5f02f0373f7c5f44711d676f3e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.53