Medium
Out-of-bounds read information disclosure vulnerability
Type: advisorySources: OSV
A heap out-of-bounds memory read flaw was found in the virtual nvme device in QEMU. The QEMU process does not validate an offset provided by the guest before computing a host heap pointer, which is used for copying data back to the guest. Arbitrary heap memory relative to an allocated buffer can be disclosed.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2023-4135
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 5 Nov 2026, 04:13 UTC · Revision 1
Source evidence
Out-of-bounds read information disclosure vulnerability
core-osv · Original sourcePublished 4 Aug 2023, 13:19 UTC
A heap out-of-bounds memory read flaw was found in the virtual nvme device in QEMU. The QEMU process does not validate an offset provided by the guest before computing a host heap pointer, which is used for copying data back to the guest. Arbitrary heap memory relative to an allocated buffer can be disclosed.
osv:CVE-2023-4135
Complete source record
{
"id": "9ebf301625322a3482ad3dba5d2acfc7734c48fef6ff8c4ddb12e6d275f74296",
"url": "https://osv.dev/vulnerability/CVE-2023-4135",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Out-of-bounds read information disclosure vulnerability",
"summary": "A heap out-of-bounds memory read flaw was found in the virtual nvme device in QEMU. The QEMU process does not validate an offset provided by the guest before computing a host heap pointer, which is used for copying data back to the guest. Arbitrary heap memory relative to an allocated buffer can be disclosed.",
"evidence": "osv:CVE-2023-4135",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2023-4135",
"aliases": [
"CVE-2023-4135"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/qemu/qemu",
"type": "GIT",
"events": [
{
"introduced": "c1eb2ddf0f8075faddc5f7c3d39feae3e8e9d6b4"
},
{
"fixed": "7e5a8bb22368b3555644cb2debd3df24592f3a21"
},
{
"introduced": "2c27fdc7a626408ee2cf30d791aa0b63027c7404"
},
{
"last_affected": "9ba37026fcf6b7f3f096c0cca3e1e7307802486b"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "8.0.0"
},
{
"fixed": "8.1.0"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:qemu:qemu:8.1.0:rc0:*:*:*:*:*:*",
"range": [
{
"introduced": "8.1.0-rc0"
},
{
"last_affected": "8.1.0-rc0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:qemu:qemu:8.1.0:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "8.1.0-rc1"
},
{
"last_affected": "8.1.0-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:qemu:qemu:8.1.0:rc2:*:*:*:*:*:*",
"range": [
{
"introduced": "8.1.0-rc2"
},
{
"last_affected": "8.1.0-rc2"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"8.1.0-rc0",
"8.1.0-rc1",
"8.1.0-rc2",
"v8.1.0-rc2",
"v8.1.0-rc1",
"v8.1.0-rc0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-4135.json"
}
},
{
"ranges": [
{
"repo": "https://gitlab.com/qemu-project/qemu",
"type": "GIT",
"events": [
{
"introduced": "c1eb2ddf0f8075faddc5f7c3d39feae3e8e9d6b4"
},
{
"fixed": "7e5a8bb22368b3555644cb2debd3df24592f3a21"
},
{
"introduced": "2c27fdc7a626408ee2cf30d791aa0b63027c7404"
},
{
"last_affected": "9ba37026fcf6b7f3f096c0cca3e1e7307802486b"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "8.0.0"
},
{
"fixed": "8.1.0"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:qemu:qemu:8.1.0:rc0:*:*:*:*:*:*",
"range": [
{
"introduced": "8.1.0-rc0"
},
{
"last_affected": "8.1.0-rc0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:qemu:qemu:8.1.0:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "8.1.0-rc1"
},
{
"last_affected": "8.1.0-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:qemu:qemu:8.1.0:rc2:*:*:*:*:*:*",
"range": [
{
"introduced": "8.1.0-rc2"
},
{
"last_affected": "8.1.0-rc2"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"8.1.0-rc0",
"8.1.0-rc1",
"8.1.0-rc2",
"v8.1.0-rc2",
"v8.1.0-rc1",
"v8.1.0-rc0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-4135.json"
}
}
],
"modified": "2026-10-28T02:30:42.439853590Z",
"provider": "osv",
"references": [
"https://access.redhat.com/downloads/content/package-browser/",
"https://packages.fedoraproject.org/",
"https://access.redhat.com/security/cve/CVE-2023-4135",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/4xxx/CVE-2023-4135.json",
"https://nvd.nist.gov/vuln/detail/CVE-2023-4135",
"https://security.netapp.com/advisory/ntap-20230915-0012/",
"https://www.zerodayinitiative.com/advisories/ZDI-CAN-21521",
"https://bugzilla.redhat.com/show_bug.cgi?id=2229101"
],
"provider_metadata": {
"cwe_ids": [
"CWE-125"
],
"cna_assigner": "redhat",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/4xxx/CVE-2023-4135.json"
}
},
"related_cves": [
{
"value": "CVE-2023-4135",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 510175,
"published_at": "2023-08-04T13:19:15.76+00:00"
}