--- cve: "CVE-2024-44948" severity: "LOW" cvss: 3.1 epss: "24%" vendor: "Linux" kev: false exploited: false published: "2024-09-04 19:15:29" tags: [cve, security, low] source: tsecurity.de CVE-Dossier exported: "2026-09-18T05:40:19+02:00" --- # CVE-2024-44948 > 3.1 LOW ## Beschreibung 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 MSRs. Though on a CPU that does not support the fixed MTRR capability this results in a #GP. The #GP itself is harmless because the RDMSR fault is handled gracefully, but results in a WARN_ON(). Add the missing capability check to prevent this. ## Patch verfügbar (OSV) - Kernel ≥ 4.19.320 - Kernel ≥ 5.4.282 - Kernel ≥ 5.10.224 - Kernel ≥ 5.15.165 - Kernel ≥ 6.1.105 - Kernel ≥ 6.6.46 - Kernel ≥ 6.10.5 ## Referenzen - - - - - - - - - - - --- _Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2024-44948) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_