CVE-2026-31558

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-31558
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[].

8.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.0 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References
Link Resource
https://git.kernel.org/stable/c/2db06c15d8c7a0ccb6108524e16cd9163753f354 Patch
https://git.kernel.org/stable/c/47857b05bd50db01e211a1b6f513d57901cd3e6b Patch
https://git.kernel.org/stable/c/596c3f8069c4792f22fce8c4452f44410032d910 Patch
https://git.kernel.org/stable/c/878cf6acb4fd8ab4126cf9d369a5bb0e23123418 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
History

27 Apr 2026, 20:13

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/2db06c15d8c7a0ccb6108524e16cd9163753f354 - () https://git.kernel.org/stable/c/2db06c15d8c7a0ccb6108524e16cd9163753f354 - Patch
References () https://git.kernel.org/stable/c/47857b05bd50db01e211a1b6f513d57901cd3e6b - () https://git.kernel.org/stable/c/47857b05bd50db01e211a1b6f513d57901cd3e6b - Patch
References () https://git.kernel.org/stable/c/596c3f8069c4792f22fce8c4452f44410032d910 - () https://git.kernel.org/stable/c/596c3f8069c4792f22fce8c4452f44410032d910 - Patch
References () https://git.kernel.org/stable/c/878cf6acb4fd8ab4126cf9d369a5bb0e23123418 - () https://git.kernel.org/stable/c/878cf6acb4fd8ab4126cf9d369a5bb0e23123418 - Patch
CPE cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
CWE CWE-125
First Time Linux
Linux linux Kernel

27 Apr 2026, 15:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 8.8

24 Apr 2026, 15:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-04-24 15:16

Updated : 2026-04-27 20:13

NVD link : CVE-2026-31558

Mitre link : CVE-2026-31558

CVE.ORG link : CVE-2026-31558

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-125

Out-of-bounds Read