CVE-2026-31558
8.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Summary
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[].
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 73516e9da512adc63ba3859fbd82a21f6257348f < 596c3f8069c4792f22fce8c4452f44410032d910 | affected |
| Linux | Linux | 73516e9da512adc63ba3859fbd82a21f6257348f < 878cf6acb4fd8ab4126cf9d369a5bb0e23123418 | affected |
| Linux | Linux | 73516e9da512adc63ba3859fbd82a21f6257348f < 47857b05bd50db01e211a1b6f513d57901cd3e6b | affected |
| Linux | Linux | 73516e9da512adc63ba3859fbd82a21f6257348f < 2db06c15d8c7a0ccb6108524e16cd9163753f354 | affected |
| Linux | Linux | 6.10 | affected |
| Linux | Linux | 0 < 6.10 | unaffected |
| Linux | Linux | 6.12.80 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.21 <= 6.18.* | unaffected |
| Linux | Linux | 6.19.11 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/596c3f8069c4792f22fce8c4452f44410032d910
- https://git.kernel.org/stable/c/878cf6acb4fd8ab4126cf9d369a5bb0e23123418
- https://git.kernel.org/stable/c/47857b05bd50db01e211a1b6f513d57901cd3e6b
- https://git.kernel.org/stable/c/2db06c15d8c7a0ccb6108524e16cd9163753f354
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