CVE-2026-31591: Linux

Описание

Оригинално описание

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).

Засегнати продукти

• Linux Linux: ad27ce155566f2b4400fa865859834592bd18777 преди 30fd9d8c82087742168db779929d8be0459b0716; ad27ce155566f2b4400fa865859834592bd18777 преди 4df77742e8b9a6b935bdf46f02fd0aca4d4ee7f5; ad27ce155566f2b4400fa865859834592bd18777 преди c87938fc7d99a06a7e5477c45b4e5a4148f85d66; ad27ce155566f2b4400fa865859834592bd18777 преди cb923ee6a80f4e604e6242a4702b59251e61a380
• Linux Linux: 6.11; преди 6.11; 6.18.24 до 6.18.*; 6.19.14 до 6.19.*; 7.0.1 до 7.0.*; 7.1 до *

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-31591
• https://nvd.nist.gov/vuln/detail/CVE-2026-31591
• https://git.kernel.org/stable/c/30fd9d8c82087742168db779929d8be0459b0716
• https://git.kernel.org/stable/c/4df77742e8b9a6b935bdf46f02fd0aca4d4ee7f5
• https://git.kernel.org/stable/c/c87938fc7d99a06a7e5477c45b4e5a4148f85d66
• https://git.kernel.org/stable/c/cb923ee6a80f4e604e6242a4702b59251e61a380