Description
In the Linux kernel, the following vulnerability has been resolved:
KVM: VMX: Disable preemption when probing user return MSRs
Disable preemption when probing a user return MSR via RDSMR/WRMSR. If the MSR holds a different value per logical CPU, the WRMSR could corrupt the host's value if KVM is preempted between the RDMSR and WRMSR, and then rescheduled on a different CPU.
Opportunistically land the helper in common x86, SVM will use the helper in a future commit.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 4be5341026246870818e28b53202b001426a5aec, < 31f29749ee970c251b3a7e5b914108425940d089; >= 4be5341026246870818e28b53202b001426a5aec, < 5adcdeb57007ccf8ab7ac20bf787ffb6fafb1a94; >= 4be5341026246870818e28b53202b001426a5aec, < e3ea1895df719c4ef87862501bb10d95f4177bed; >= 4be5341026246870818e28b53202b001426a5aec, < 5104d7ffcf24749939bea7fdb5378d186473f890 |
| Linux | Linux | 5.5 |
References
- https://git.kernel.org/stable/c/31f29749ee970c251b3a7e5b914108425940d089Patch
- https://git.kernel.org/stable/c/5104d7ffcf24749939bea7fdb5378d186473f890Patch
- https://git.kernel.org/stable/c/5adcdeb57007ccf8ab7ac20bf787ffb6fafb1a94Patch
- https://git.kernel.org/stable/c/e3ea1895df719c4ef87862501bb10d95f4177bedPatch
- https://git.kernel.org/stable/c/31f29749ee970c251b3a7e5b914108425940d089Patch
- https://git.kernel.org/stable/c/5104d7ffcf24749939bea7fdb5378d186473f890Patch
- https://git.kernel.org/stable/c/5adcdeb57007ccf8ab7ac20bf787ffb6fafb1a94Patch
- https://git.kernel.org/stable/c/e3ea1895df719c4ef87862501bb10d95f4177bedPatch
Timeline
- Published
- Feb 28, 2024
- Last modified
- Aug 4, 2026
- NVD status
- Modified