cve-2022-48764
Vulnerability from cvelistv5
Published
2024-06-20 11:13
Modified
2024-08-03 15:25
Severity ?
Summary
KVM: x86: Free kvm_cpuid_entry2 array on post-KVM_RUN KVM_SET_CPUID{,2}
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/811f95ff95270e6048197821434d9301e3d7f07c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b9ee734a14bb685b2088f2176d82b34cb4e30dbc
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

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              "content": {
                "id": "CVE-2022-48764",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
                "timestamp": "2024-06-20T13:26:56.412300Z",
                "version": "2.0.3"
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              "type": "ssvc"
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        "providerMetadata": {
          "dateUpdated": "2024-06-20T13:27:07.630Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T15:25:01.597Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
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        "references": [
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            "tags": [
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            "url": "https://git.kernel.org/stable/c/b9ee734a14bb685b2088f2176d82b34cb4e30dbc"
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            "url": "https://git.kernel.org/stable/c/811f95ff95270e6048197821434d9301e3d7f07c"
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        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/kvm/cpuid.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
              "version": "24e7590c60aa",
              "versionType": "git"
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            {
              "lessThan": "811f95ff9527",
              "status": "affected",
              "version": "c6617c61e8fe",
              "versionType": "git"
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          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/kvm/cpuid.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThan": "5.16.5",
              "status": "affected",
              "version": "5.16.3",
              "versionType": "custom"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: x86: Free kvm_cpuid_entry2 array on post-KVM_RUN KVM_SET_CPUID{,2}\n\nFree the \"struct kvm_cpuid_entry2\" array on successful post-KVM_RUN\nKVM_SET_CPUID{,2} to fix a memory leak, the callers of kvm_set_cpuid()\nfree the array only on failure.\n\n BUG: memory leak\n unreferenced object 0xffff88810963a800 (size 2048):\n  comm \"syz-executor025\", pid 3610, jiffies 4294944928 (age 8.080s)\n  hex dump (first 32 bytes):\n    00 00 00 00 00 00 00 00 00 00 00 00 0d 00 00 00  ................\n    47 65 6e 75 6e 74 65 6c 69 6e 65 49 00 00 00 00  GenuntelineI....\n  backtrace:\n    [\u003cffffffff814948ee\u003e] kmalloc_node include/linux/slab.h:604 [inline]\n    [\u003cffffffff814948ee\u003e] kvmalloc_node+0x3e/0x100 mm/util.c:580\n    [\u003cffffffff814950f2\u003e] kvmalloc include/linux/slab.h:732 [inline]\n    [\u003cffffffff814950f2\u003e] vmemdup_user+0x22/0x100 mm/util.c:199\n    [\u003cffffffff8109f5ff\u003e] kvm_vcpu_ioctl_set_cpuid2+0x8f/0xf0 arch/x86/kvm/cpuid.c:423\n    [\u003cffffffff810711b9\u003e] kvm_arch_vcpu_ioctl+0xb99/0x1e60 arch/x86/kvm/x86.c:5251\n    [\u003cffffffff8103e92d\u003e] kvm_vcpu_ioctl+0x4ad/0x950 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4066\n    [\u003cffffffff815afacc\u003e] vfs_ioctl fs/ioctl.c:51 [inline]\n    [\u003cffffffff815afacc\u003e] __do_sys_ioctl fs/ioctl.c:874 [inline]\n    [\u003cffffffff815afacc\u003e] __se_sys_ioctl fs/ioctl.c:860 [inline]\n    [\u003cffffffff815afacc\u003e] __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:860\n    [\u003cffffffff844a3335\u003e] do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n    [\u003cffffffff844a3335\u003e] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\n    [\u003cffffffff84600068\u003e] entry_SYSCALL_64_after_hwframe+0x44/0xae"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-06-20T11:14:58.961Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/b9ee734a14bb685b2088f2176d82b34cb4e30dbc"
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        {
          "url": "https://git.kernel.org/stable/c/811f95ff95270e6048197821434d9301e3d7f07c"
        }
      ],
      "title": "KVM: x86: Free kvm_cpuid_entry2 array on post-KVM_RUN KVM_SET_CPUID{,2}",
      "x_generator": {
        "engine": "bippy-7d53e8ef8be4"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-48764",
    "datePublished": "2024-06-20T11:13:41.170Z",
    "dateReserved": "2024-06-20T11:09:39.060Z",
    "dateUpdated": "2024-08-03T15:25:01.597Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-48764\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-06-20T12:15:14.450\",\"lastModified\":\"2024-06-20T12:43:25.663\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nKVM: x86: Free kvm_cpuid_entry2 array on post-KVM_RUN KVM_SET_CPUID{,2}\\n\\nFree the \\\"struct kvm_cpuid_entry2\\\" array on successful post-KVM_RUN\\nKVM_SET_CPUID{,2} to fix a memory leak, the callers of kvm_set_cpuid()\\nfree the array only on failure.\\n\\n BUG: memory leak\\n unreferenced object 0xffff88810963a800 (size 2048):\\n  comm \\\"syz-executor025\\\", pid 3610, jiffies 4294944928 (age 8.080s)\\n  hex dump (first 32 bytes):\\n    00 00 00 00 00 00 00 00 00 00 00 00 0d 00 00 00  ................\\n    47 65 6e 75 6e 74 65 6c 69 6e 65 49 00 00 00 00  GenuntelineI....\\n  backtrace:\\n    [\u003cffffffff814948ee\u003e] kmalloc_node include/linux/slab.h:604 [inline]\\n    [\u003cffffffff814948ee\u003e] kvmalloc_node+0x3e/0x100 mm/util.c:580\\n    [\u003cffffffff814950f2\u003e] kvmalloc include/linux/slab.h:732 [inline]\\n    [\u003cffffffff814950f2\u003e] vmemdup_user+0x22/0x100 mm/util.c:199\\n    [\u003cffffffff8109f5ff\u003e] kvm_vcpu_ioctl_set_cpuid2+0x8f/0xf0 arch/x86/kvm/cpuid.c:423\\n    [\u003cffffffff810711b9\u003e] kvm_arch_vcpu_ioctl+0xb99/0x1e60 arch/x86/kvm/x86.c:5251\\n    [\u003cffffffff8103e92d\u003e] kvm_vcpu_ioctl+0x4ad/0x950 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4066\\n    [\u003cffffffff815afacc\u003e] vfs_ioctl fs/ioctl.c:51 [inline]\\n    [\u003cffffffff815afacc\u003e] __do_sys_ioctl fs/ioctl.c:874 [inline]\\n    [\u003cffffffff815afacc\u003e] __se_sys_ioctl fs/ioctl.c:860 [inline]\\n    [\u003cffffffff815afacc\u003e] __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:860\\n    [\u003cffffffff844a3335\u003e] do_syscall_x64 arch/x86/entry/common.c:50 [inline]\\n    [\u003cffffffff844a3335\u003e] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\\n    [\u003cffffffff84600068\u003e] entry_SYSCALL_64_after_hwframe+0x44/0xae\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/811f95ff95270e6048197821434d9301e3d7f07c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b9ee734a14bb685b2088f2176d82b34cb4e30dbc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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