Orta CVSS 5.5
CVE-2024-44948: Linux Kernel: güvenlik açığı
Açıklama (NVD)
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.
Özet bilgiler
- Ürün
- Linux Linux Kernel
- CVSS v3.1
- 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS
- %0,24 (yüzdelik 15)
- Yama
- Mevcut
Etkilenen sürümler
| Ürün | Başlangıç | Bitiş | Düzeltildi |
|---|---|---|---|
| linux-linux-kernel | 2.6.22 | — | 4.19.320 |
| linux-linux-kernel | 4.20 | — | 5.4.282 |
| linux-linux-kernel | 5.5 | — | 5.10.224 |
| linux-linux-kernel | 5.11 | — | 5.15.165 |
| linux-linux-kernel | 5.16 | — | 6.1.105 |
| linux-linux-kernel | 6.2 | — | 6.6.46 |
| linux-linux-kernel | 6.7 | — | 6.10.5 |
| linux-linux-kernel | 6.11 | 6.11 | — |
| linux-linux-kernel | 6.11 | 6.11 | — |