SB20260812206 - Stack-based buffer overflow in Linux kernel iommu amd driver
Published: August 12, 2026
Security Bulletin ID
SB20260812206
CSH 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 vulnerability.
1) Stack-based buffer overflow (CVE-ID: CVE-2026-68325)
CWE-ID: CWE-121 - Stack-based buffer overflow
CVSSv4: 6.8 [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]
The vulnerability allows a local attacker to cause a denial of service.
The vulnerability exists due to a stack-based buffer overflow in the ivrs_acpihid command-line parser when parsing the ivrs_acpihid kernel command-line parameter. A local attacker can supply a specially crafted parameter with more than four entries to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/030a8e84f8f1b6e96f469c84a13a225c3699910b
- https://git.kernel.org/stable/c/1e31d2394e0db69541b1591d46c5ad6431c81db3
- https://git.kernel.org/stable/c/abe5d7962f09adada9c4fb25b816dddd3f97c55d
- https://git.kernel.org/stable/c/e5ebe8544df1a1c3611739a8622156094fe470df
- https://git.kernel.org/stable/c/fb80117fddb5b477218dc99bb53911b72c3847f8