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47 lines
1.8 KiB
JSON
47 lines
1.8 KiB
JSON
{
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"id": "CVE-2023-3640",
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"sourceIdentifier": "secalert@redhat.com",
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"published": "2023-07-24T16:15:13.063",
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"lastModified": "2023-07-24T16:15:13.063",
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"vulnStatus": "Received",
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"descriptions": [
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{
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"lang": "en",
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"value": "A possible unauthorized memory access flaw was found in the Linux kernel's cpu_entry_area mapping of X86 CPU data to memory, where a user may guess the location of exception stacks or other important data. Based on the previous CVE-2023-0597, the 'Randomize per-cpu entry area' feature was implemented in /arch/x86/mm/cpu_entry_area.c, which works through the init_cea_offsets() function when KASLR is enabled. However, despite this feature, there is still a risk of per-cpu entry area leaks. This issue could allow a local user to gain access to some important data with memory in an expected location and potentially escalate their privileges on the system."
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}
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],
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"metrics": {
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"cvssMetricV31": [
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{
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"source": "secalert@redhat.com",
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"type": "Secondary",
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"cvssData": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"attackVector": "LOCAL",
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"attackComplexity": "HIGH",
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"privilegesRequired": "LOW",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"availabilityImpact": "HIGH",
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"baseScore": 7.0,
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"baseSeverity": "HIGH"
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},
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"exploitabilityScore": 1.0,
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"impactScore": 5.9
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}
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]
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},
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"references": [
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{
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"url": "https://access.redhat.com/security/cve/CVE-2023-3640",
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"source": "secalert@redhat.com"
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},
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{
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2217523",
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"source": "secalert@redhat.com"
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}
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]
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} |