CVE-2026-64286

Katalog CVE

CVSS 8.2 · High EPSS 0,18%

Kerentanan pada linux kernel. Skor CVSS 3.1 8.2 (High) menurut CNA.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Clear __hyp_running_vcpu when flushing the pKVM hyp vCPU flush_hyp_vcpu() copies the host vCPU context into the hyp's private vCPU on every run. ctxt_to_vcpu() expects a guest context to have a NULL __hyp_running_vcpu, which is only ever set on the host context, so that it resolves the vCPU via container_of(). While this is generally the case, flush_hyp_vcpu() copies the context verbatim and does not enforce this, so a value provided by the host is dereferenced at EL2 (host -> EL2). Fix by clearing __hyp_running_vcpu after the copy.

Rincian

Terbit di NVD

25 Juli 2026

Terakhir diubah

17 Agustus 2026

Status NVD

Analyzed

CVSS 3.1

8.2 (High), sumber CNA
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H · uraikan di kalkulator

EPSS (30 hari)

0,18% peluang dieksploitasi; lebih tinggi dari 6,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/477145860dba4c30f0b4e36f02f4c5291c1c888b patch
• https://git.kernel.org/stable/c/6bea2f8becdb20d34378493c3b77a9b9cf8c6cfa patch
• https://git.kernel.org/stable/c/d4f4d61715d1061ba83b88196a3605662be30750 patch
• https://git.kernel.org/stable/c/dfaef40d8a1533940fc1af788d70fce07362b4ce patch
• https://git.kernel.org/stable/c/e8042f6e1d7befb2fb6b10a75918642bcd0acf9a patch