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vuln-cve/data/2023/5xxx/CVE-2023-5633.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2023-5633",
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"state": "PUBLISHED",
"assignerShortName": "redhat",
"dateReserved": "2023-10-18T08:39:18.720Z",
"datePublished": "2023-10-23T21:58:59.776Z",
"dateUpdated": "2026-11-04T21:06:09.699Z"
},
"containers": {
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"title": "Kernel: vmwgfx: reference count issue leads to use-after-free in surface handling",
"metrics": [
{
"other": {
"content": {
"value": "Important",
"namespace": "https://access.redhat.com/security/updates/classification/"
},
"type": "Red Hat severity rating"
}
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS"
}
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{
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"value": "The reference count changes made as part of the CVE-2023-33951 and CVE-2023-33952 fixes exposed a use-after-free flaw in the way memory objects were handled when they were being used to store a surface. When running inside a VMware guest with 3D acceleration enabled, a local, unprivileged user could potentially use this flaw to escalate their privileges."
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2245663",
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"datePublic": "2023-09-28T00:00:00.000Z",
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"description": "Improper Update of Reference Count",
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"value": "This flaw can be mitigated by turning off 3D acceleration in VMware (if possible) or preventing the affected `vmwgfx` kernel module from being loaded. For instructions on how to blacklist a kernel module, please see https://access.redhat.com/solutions/41278."
}
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{
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"time": "2023-09-28T00:00:00.000Z",
"value": "Made public."
}
],
"credits": [
{
"lang": "en",
"value": "Red Hat would like to thank Murray McAllister (NCC Group APAC) for reporting this issue."
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}
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