CVEvulnerability
CVE-2026-31591
5.5 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-04-24
- Last modified
- 2026-06-17
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Description
In the Linux kernel, the following vulnerability has been resolved:
KVM: SEV: Lock all vCPUs when synchronzing VMSAs for SNP launch finish
Lock all vCPUs when synchronizing and encrypting VMSAs for SNP guests, as
allowing userspace to manipulate and/or run a vCPU while its state is being
synchronized would at best corrupt vCPU state, and at worst crash the host
kernel.
Opportunistically assert that vcpu->mutex is held when synchronizing its
VMSA (the SEV-ES path already locks vCPUs).
Affected configurations
• linux linux kernel (>= 6.11 < 6.18.24)
• linux linux kernel (>= 6.19 < 6.19.14)
• linux linux kernel (>= 7.0 < 7.0.1)
References
- https://git.kernel.org/stable/c/30fd9d8c82087742168db779929d8be0459b0716 Patch
- https://git.kernel.org/stable/c/4df77742e8b9a6b935bdf46f02fd0aca4d4ee7f5 Patch
- https://git.kernel.org/stable/c/c87938fc7d99a06a7e5477c45b4e5a4148f85d66 Patch
- https://git.kernel.org/stable/c/cb923ee6a80f4e604e6242a4702b59251e61a380 Patch