MediumFix available
linux, xen — security advisory
A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality.
- Products
- linux, xen
- Affected versions
- 4.17.1+2-gb773c48e36-1, 4.17.2+55-g0b56bed864-1, 4.17.2-1, 6.1.27-1, 6.1.37-1, 6.1.38-1, 6.1.38-2, 6.1.38-2~bpo11+1, 6.1.38-3, 6.1.38-4, 6.1.38-4~bpo11+1
- Fixed versions
- 4.17.2+55-g0b56bed864-1, 4.17.2+76-ge1f9cb16e2-1~deb12u1, 6.1.52-1, 6.4.13-1
- CVEs
- CVE-2023-20588
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 15:23 UTC · Revision 1
Source evidence
A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality.
osv:DEBIAN-CVE-2023-20588
linux
Fixed versions: 6.1.52-1
linux
Fixed versions: 6.4.13-1
linux
Fixed versions: 6.4.13-1
xen
Fixed versions: 4.17.2+76-ge1f9cb16e2-1~deb12u1
xen
Fixed versions: 4.17.2+55-g0b56bed864-1
xen
Fixed versions: 4.17.2+55-g0b56bed864-1
Complete source record
{
"id": "71f359913639a62f6a9963e12db90e6e97021bad1b19163501c05359a645bb48",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2023-20588",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2023-20588",
"summary": "A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality.",
"evidence": "osv:DEBIAN-CVE-2023-20588",
"products": [
{
"name": {
"value": "linux",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "6.1.52-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "6.1.27-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.37-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.38-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.38-2",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.38-2~bpo11+1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.38-3",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.38-4",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.38-4~bpo11+1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "linux",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "6.4.13-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "linux",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "6.4.13-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.17.2+76-ge1f9cb16e2-1~deb12u1",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": [
{
"value": "4.17.1+2-gb773c48e36-1",
"evidence": "/affected/3/versions"
},
{
"value": "4.17.2+55-g0b56bed864-1",
"evidence": "/affected/3/versions"
},
{
"value": "4.17.2-1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "xen",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.17.2+55-g0b56bed864-1",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.17.2+55-g0b56bed864-1",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2023-20588",
"aliases": [
"DEBIAN-CVE-2023-20588"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "6.1.52-1"
}
]
}
],
"package": {
"name": "linux",
"purl": "pkg:deb/debian/linux?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"6.1.27-1",
"6.1.37-1",
"6.1.38-1",
"6.1.38-2",
"6.1.38-2~bpo11+1",
"6.1.38-3",
"6.1.38-4",
"6.1.38-4~bpo11+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-20588.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "6.4.13-1"
}
]
}
],
"package": {
"name": "linux",
"purl": "pkg:deb/debian/linux?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-20588.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "6.4.13-1"
}
]
}
],
"package": {
"name": "linux",
"purl": "pkg:deb/debian/linux?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-20588.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.17.2+76-ge1f9cb16e2-1~deb12u1"
}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:deb/debian/xen?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"4.17.1+2-gb773c48e36-1",
"4.17.2+55-g0b56bed864-1",
"4.17.2-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-20588.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.17.2+55-g0b56bed864-1"
}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:deb/debian/xen?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-20588.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.17.2+55-g0b56bed864-1"
}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:deb/debian/xen?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-20588.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-26T18:00:27.044454902Z",
"provider": "osv",
"upstream": [
"CVE-2023-20588"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2023-20588"
]
},
"related_cves": [
{
"value": "CVE-2023-20588",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 455019,
"published_at": "2023-08-08T18:15:11.653+00:00"
}