CVE-2022-48764 (GCVE-0-2022-48764)
Vulnerability from cvelistv5
Published
2024-06-20 11:13
Modified
2025-05-04 08:22
Severity ?
VLAI Severity ?
EPSS score ?
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
References
Impacted products
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"url": "https://git.kernel.org/stable/c/811f95ff95270e6048197821434d9301e3d7f07c"
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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\"]}]}}",
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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\": 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"dataType": "CVE_RECORD",
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}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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