CVE-2022-49610
KVM: VMX: Prevent RSB underflow before vmenter
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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. ]
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Feb 26, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
d28b387fb74da95d69d2615732f50cceb38e9a4d < afd743f6dde87296c6f3414706964c491bb85862 d28b387fb74da95d69d2615732f50cceb38e9a4d < 07853adc29a058c5fd143c14e5ac528448a72ed9 44491a23b73789c0a914af4ea55ccf8968adf90b fc6aae9f407810cb153a9133c28735871f9f0a16
Linux / Linux
4.16