CVE-2026-31558
High
Description
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[].
SeverityHigh
CVSS8.8
Exploit probability—
Product
Linux Kernel
PublishedApr 24, 2026
First seenApr 24, 2026
How to fix
Update
- linux linux_kernel6.12.80, 6.18.21, 6.19.11 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.10.1 ≤ v < 6.12.80, 6.13 ≤ v < 6.18.21, 6.19 ≤ v < 6.19.11, 6.10, 7.0 | 6.12.80, 6.18.21, 6.19.11 |
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