CVE-2021-47112
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2021
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
x86/kvm: Teardown PV features on boot CPU as well
In the Linux kernel, the following vulnerability has been resolved: x86/kvm: Teardown PV features on boot CPU as well Various PV features (Async PF, PV EOI, steal time) work through memory shared with hypervisor and when we restore from hibernation we must properly teardown all these features to make sure hypervisor doesn't write to stale locations after we jump to the previously hibernated kernel (which can try to place anything there). For secondary CPUs the job is already done by kvm_cpu_down_prepare(), register syscore ops to do the same for boot CPU.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| fd10cde9294f73eeccbc16f3fec1ae6cde7b800c | affected | git | 7620a669111b52f224d006dea9e1e688e2d62c54 | Unavailable | None listed |
| fd10cde9294f73eeccbc16f3fec1ae6cde7b800c | affected | git | 38b858da1c58ad46519a257764e059e663b59ff2 | Unavailable | None listed |
| fd10cde9294f73eeccbc16f3fec1ae6cde7b800c | affected | git | d1629b5b925de9b27979e929dae7fcb766daf6b6 | Unavailable | None listed |
| fd10cde9294f73eeccbc16f3fec1ae6cde7b800c | affected | git | 8b79feffeca28c5459458fe78676b081e87c93a4 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.6.38 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.38 | Unavailable | None listed |
| 5.4.125 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.43 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.12.10 | unaffected | semver | Unavailable | 5.12.* | None listed |
| 5.13 | unaffected | original_commit_for_fix | Unavailable | * | None listed |