CVSS 5.5 · Medium EPSS 0,24%
Kerentanan pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut 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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Versi 2.6.22 hingga sebelum 4.19.320 |
| linux | linux kernel | Versi 4.20 hingga sebelum 5.4.282 |
| linux | linux kernel | Versi 5.5 hingga sebelum 5.10.224 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.165 |
| linux | linux kernel | Versi 5.16 hingga sebelum 6.1.105 |
| linux | linux kernel | Versi 6.2 hingga sebelum 6.6.46 |
| linux | linux kernel | Versi 6.7 hingga sebelum 6.10.5 |
| linux | linux kernel | Versi 6.11 rc1 |
| linux | linux kernel | Versi 6.11 rc2 |