CVE-2022-48764 (GCVE-0-2022-48764)

Vulnerability from cvelistv5 – Published: 2024-06-20 11:13 – Updated: 2025-05-04 08:22
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Free kvm_cpuid_entry2 array on post-KVM_RUN KVM_SET_CPUID{,2} Free the "struct kvm_cpuid_entry2" array on successful post-KVM_RUN KVM_SET_CPUID{,2} to fix a memory leak, the callers of kvm_set_cpuid() free the array only on failure. BUG: memory leak unreferenced object 0xffff88810963a800 (size 2048): comm "syz-executor025", pid 3610, jiffies 4294944928 (age 8.080s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 0d 00 00 00 ................ 47 65 6e 75 6e 74 65 6c 69 6e 65 49 00 00 00 00 GenuntelineI.... backtrace: [<ffffffff814948ee>] kmalloc_node include/linux/slab.h:604 [inline] [<ffffffff814948ee>] kvmalloc_node+0x3e/0x100 mm/util.c:580 [<ffffffff814950f2>] kvmalloc include/linux/slab.h:732 [inline] [<ffffffff814950f2>] vmemdup_user+0x22/0x100 mm/util.c:199 [<ffffffff8109f5ff>] kvm_vcpu_ioctl_set_cpuid2+0x8f/0xf0 arch/x86/kvm/cpuid.c:423 [<ffffffff810711b9>] kvm_arch_vcpu_ioctl+0xb99/0x1e60 arch/x86/kvm/x86.c:5251 [<ffffffff8103e92d>] kvm_vcpu_ioctl+0x4ad/0x950 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4066 [<ffffffff815afacc>] vfs_ioctl fs/ioctl.c:51 [inline] [<ffffffff815afacc>] __do_sys_ioctl fs/ioctl.c:874 [inline] [<ffffffff815afacc>] __se_sys_ioctl fs/ioctl.c:860 [inline] [<ffffffff815afacc>] __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:860 [<ffffffff844a3335>] do_syscall_x64 arch/x86/entry/common.c:50 [inline] [<ffffffff844a3335>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 [<ffffffff84600068>] entry_SYSCALL_64_after_hwframe+0x44/0xae
Severity ?
5.3 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 24e7590c60aa9487b8e43583dc9885f62f8216c1 , < b9ee734a14bb685b2088f2176d82b34cb4e30dbc (git)
Affected: c6617c61e8fe44b9e9fdfede921f61cac6b5149d , < 811f95ff95270e6048197821434d9301e3d7f07c (git)
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    Linux Linux Affected: 5.16.3 , < 5.16.5 (semver)
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    "dateReserved": "2024-06-20T11:09:39.060Z",
    "dateUpdated": "2025-05-04T08:22:35.952Z",
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      "id": "CVE-2022-48764",
      "lastModified": "2024-11-21T07:33:58.503",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L\", \"baseScore\": 5.3, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"LOW\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"LOW\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 3.4}]}",
      "published": "2024-06-20T12:15:14.450",
      "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\"}, {\"url\": \"https://git.kernel.org/stable/c/811f95ff95270e6048197821434d9301e3d7f07c\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/b9ee734a14bb685b2088f2176d82b34cb4e30dbc\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Awaiting Analysis"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2022-48764\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-06-20T12:15:14.450\",\"lastModified\":\"2025-03-24T18:16:46.910\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"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\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: KVM: x86: Libere la matriz kvm_cpuid_entry2 en KVM_RUN KVM_SET_CPUID{,2} posterior a KVM_RUN KVM_SET_CPUID{,2} Libere la matriz \\\"struct kvm_cpuid_entry2\\\" en KVM_RUN KVM_SET_CPUID{,2} posterior a \u00e9xito para corregir una p\u00e9rdida de memoria , las personas que llaman a kvm_set_cpuid() liberan la matriz solo en caso de falla. ERROR: p\u00e9rdida de memoria, objeto sin referencia 0xffff88810963a800 (size 2048): comm \\\"syz-executor025\\\", pid 3610, jiffies 4294944928 (age 8.080s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 0d 00 00 00 ................ 47 65 6e 75 6e 74 65 6c 69 6e 65 49 00 00 00 00 GenuntelineI.... backtrace: [] kmalloc_node include/linux/slab.h:604 [inline] [] kvmalloc_node+0x3e/0x100 mm/util.c:580 [] kvmalloc include/linux/slab.h:732 [inline] [] vmemdup_user+0x22/0x100 mm/util.c:199 [] kvm_vcpu_ioctl_set_cpuid2+0x8f/0xf0 arch/x86/kvm/cpuid.c:423 [] kvm_arch_vcpu_ioctl+0xb99/0x1e60 arch/x86/kvm/x86.c:5251 [] kvm_vcpu_ioctl+0x4ad/0x950 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4066 [] vfs_ioctl fs/ioctl.c:51 [inline] [] __do_sys_ioctl fs/ioctl.c:874 [inline] [] __se_sys_ioctl fs/ioctl.c:860 [inline] [] __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:860 [] do_syscall_x64 arch/x86/entry/common.c:50 [inline] [] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 [] entry_SYSCALL_64_after_hwframe+0x44/0xae \"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":1.8,\"impactScore\":3.4}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-401\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16.3\",\"versionEndExcluding\":\"5.16.5\",\"matchCriteriaId\":\"216FBB0D-54A9-4964-A98D-0413F8FF051F\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/811f95ff95270e6048197821434d9301e3d7f07c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b9ee734a14bb685b2088f2176d82b34cb4e30dbc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/811f95ff95270e6048197821434d9301e3d7f07c\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b9ee734a14bb685b2088f2176d82b34cb4e30dbc\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/b9ee734a14bb685b2088f2176d82b34cb4e30dbc\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/811f95ff95270e6048197821434d9301e3d7f07c\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-03T15:25:01.597Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.3, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"LOW\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"LOW\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-48764\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-06-20T13:26:56.412300Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-noinfo Not enough information\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-06-20T13:27:04.368Z\"}}], \"cna\": {\"title\": \"KVM: x86: Free kvm_cpuid_entry2 array on post-KVM_RUN KVM_SET_CPUID{,2}\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"24e7590c60aa9487b8e43583dc9885f62f8216c1\", \"lessThan\": \"b9ee734a14bb685b2088f2176d82b34cb4e30dbc\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c6617c61e8fe44b9e9fdfede921f61cac6b5149d\", \"lessThan\": \"811f95ff95270e6048197821434d9301e3d7f07c\", \"versionType\": \"git\"}], \"programFiles\": [\"arch/x86/kvm/cpuid.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.16.3\", \"lessThan\": \"5.16.5\", \"versionType\": \"semver\"}], \"programFiles\": [\"arch/x86/kvm/cpuid.c\"], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/b9ee734a14bb685b2088f2176d82b34cb4e30dbc\"}, {\"url\": \"https://git.kernel.org/stable/c/811f95ff95270e6048197821434d9301e3d7f07c\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16.5\", \"versionStartIncluding\": \"5.16.3\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T08:22:35.952Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-48764\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T08:22:35.952Z\", \"dateReserved\": \"2024-06-20T11:09:39.060Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-20T11:13:41.170Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.