CVE-2021-47296 KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak

2024-05-2114:35:19

Linux

www.cve.org

linux kernel

vulnerability

kvm

ppc

vcpu_load

vcpu

leak

user copy

failure

preempt notifier

corruption

crashes

AI Score

6.6

Confidence

Low

EPSS

Percentile

15.5%

JSON

In the Linux kernel, the following vulnerability has been resolved:

KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak

vcpu_put is not called if the user copy fails. This can result in preempt
notifier corruption and crashes, among other issues.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/powerpc/kvm/powerpc.c"
    ],
    "versions": [
      {
        "version": "b3cebfe8c1ca",
        "lessThan": "9bafc34dc4ad",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b3cebfe8c1ca",
        "lessThan": "f38527f18905",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b3cebfe8c1ca",
        "lessThan": "e14ef1095387",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b3cebfe8c1ca",
        "lessThan": "a4a488915fea",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b3cebfe8c1ca",
        "lessThan": "bc4188a2f56e",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/powerpc/kvm/powerpc.c"
    ],
    "versions": [
      {
        "version": "4.18",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.18",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.199",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.136",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.54",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.13.6",
        "lessThanOrEqual": "5.13.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.14",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]