CVE-2022-49610
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-49610
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49610.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-49610
- Downstream
- Related
- Published
- 2025-02-26T07:01:36Z
- Modified
- 2025-08-09T20:01:25Z
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
KVM: VMX: Prevent RSB underflow before vmenter
On VMX, there are some balanced returns between the time the guest's SPEC_CTRL value is written, and the vmenter.
Balanced returns (matched by a preceding call) are usually ok, but it's at least theoretically possible an NMI with a deep call stack could empty the RSB before one of the returns.
For maximum paranoia, don't allow any returns (balanced or otherwise) between the SPEC_CTRL write and the vmenter.
[ bp: Fix 32-bit build. ]
- References