In the Linux kernel, the following vulnerability has been resolved: x86/mtrr: Check if fixed MTRRs exist before saving them MTRRs have an obsolete fixed variant for fine grained caching control of …
Medium CVSS 5.5
Summary
In the Linux kernel, the following vulnerability has been resolved: x86/mtrr: Check if fixed MTRRs exist before saving them MTRRs have an obsolete fixed variant for fine grained caching control of the 640K-1MB region that uses separate MSRs. This fixed variant has a separate capability bit in the MTRR capability MSR. So far all x86 CPUs which support MTRR have this separate bit set, so it went unnoticed that mtrr_save_state() does not check the capability bit before accessing the fixed MTRR …
In-depth triage
No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).
Affected products
- :
Sources
- NVD DATABASE
Original Links
- https://git.kernel.org/stable/c/06c1de44d378ec5439db17bf476507d68589bfe9 Patch
- https://git.kernel.org/stable/c/34f36e6ee5bd7eff8b2adcd9fcaef369f752d82e Patch
- https://git.kernel.org/stable/c/388f1c954019f253a8383f7eb733f38d541e10b6 Patch
- https://git.kernel.org/stable/c/450b6b22acdaac67a18eaf5ed498421ffcf10051 Patch
- https://git.kernel.org/stable/c/8a90d3fc7c24608548d3a750671f9dac21d1a462 Patch
- https://git.kernel.org/stable/c/8aa79dfb216b865e96ff890bc4ea71650f9bc8d7 Patch
- https://git.kernel.org/stable/c/919f18f961c03d6694aa726c514184f2311a4614 Patch
- https://git.kernel.org/stable/c/ca7d00c5656d1791e28369919e3e10febe9c3b16 Patch
- https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
Timeline
- nvd_ingest NVD