In the Linux kernel, the following vulnerability has been resolved:
x86/kvm: Disable kvmclock on all CPUs on shutdown
Currenly, we disable kvmclock from machine_shutdown() hook and this
only happens for boot CPU. We need to disable it for all CPUs to
guard against memory corruption e.g. on restore from hibernate.
Note, writing '0' to kvmclock MSR doesn't clear memory location, it
just prevents hypervisor from updating the location so for the short
while after write and while CPU is still alive, the clock remains usable
and correct so we don't need to switch to some other clocksource.
References
Configurations
Configuration 1 (hide)
|
History
13 Mar 2025, 19:36
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.1 |
| First Time |
Linux linux Kernel
Linux |
|
| References | () https://git.kernel.org/stable/c/1df2dc09926f61319116c80ee85701df33577d70 - Patch | |
| References | () https://git.kernel.org/stable/c/3b0becf8b1ecf642a9edaf4c9628ffc641e490d6 - Patch | |
| References | () https://git.kernel.org/stable/c/9084fe1b3572664ad276f427dce575f580c9799a - Patch | |
| References | () https://git.kernel.org/stable/c/c02027b5742b5aa804ef08a4a9db433295533046 - Patch | |
| CPE | cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
|
| CWE | CWE-459 |
Information
Published : 2024-03-15 21:15
Updated : 2025-03-13 19:36
NVD link : CVE-2021-47110
Mitre link : CVE-2021-47110
CVE.ORG link : CVE-2021-47110
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-459
Incomplete Cleanup