CVE-2026-31558
highIn the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Make kvm_get_vcpu_by_cpuid() more robust kvm_get_vcpu_by_cpuid() takes a…
Vendor / product: Linux — linux kernel
In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Make kvm_get_vcpu_by_cpuid() more robust kvm_get_vcpu_by_cpuid() takes a cpuid parameter whose type is int, so cpuid can be negative. Let kvm_get_vcpu_by_cpuid() return NULL for this case so as to make it more robust. This fix an out-of-bounds access to kvm_arch::phyid_map::phys_map[].
CVSS
8.8
8.8 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
Timeline (UTC)
Published: 2026-04-24 15:16
Modified: 2026-11-11 23:10
NVD status: Analyzed
Last synced 3 hours ago
Verified against the source API 2026-11-11 23:12 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
linux / linux_kernel ≥6.10.1 <6.12.80, ≥6.13 <6.18.21, ≥6.19 <6.19.11, 6.10, 7.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://git.kernel.org/stable/c/2db06c15d8c7a0ccb6108524e16cd9163753f354
Patch / mitigation: https://git.kernel.org/stable/c/47857b05bd50db01e211a1b6f513d57901cd3e6b
Patch / mitigation: https://git.kernel.org/stable/c/596c3f8069c4792f22fce8c4452f44410032d910
Patch / mitigation: https://git.kernel.org/stable/c/878cf6acb4fd8ab4126cf9d369a5bb0e23123418
References
- https://git.kernel.org/stable/c/2db06c15d8c7a0ccb6108524e16cd9163753f354 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/47857b05bd50db01e211a1b6f513d57901cd3e6b 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/596c3f8069c4792f22fce8c4452f44410032d910 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/878cf6acb4fd8ab4126cf9d369a5bb0e23123418 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Data sources
NVD CVE API 2.0 — fetched 2026-11-11 23:12 UTC · record ↗