MediumFix available
xen — security advisory
Potential speculative code store bypass in all supported CPU products, in conjunction with software vulnerabilities relating to speculative execution of overwritten instructions, may cause an incorrect speculation and could result in data leakage.
- Products
- xen
- Affected versions
- Not specified
- Fixed versions
- 4.14.2+25-gb6a8c4f72d-1
- CVEs
- CVE-2021-26313
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 00:00 UTC · Revision 1
Source evidence
Potential speculative code store bypass in all supported CPU products, in conjunction with software vulnerabilities relating to speculative execution of overwritten instructions, may cause an incorrect speculation and could result in data leakage.
osv:DEBIAN-CVE-2021-26313
xen
Fixed versions: 4.14.2+25-gb6a8c4f72d-1
xen
Fixed versions: 4.14.2+25-gb6a8c4f72d-1
xen
Fixed versions: 4.14.2+25-gb6a8c4f72d-1
Complete source record
{
"id": "cd115af2643c981bde543bd79f879d5d9da225d5da5726caca3285a951bb573e",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2021-26313",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2021-26313",
"summary": "Potential speculative code store bypass in all supported CPU products, in conjunction with software vulnerabilities relating to speculative execution of overwritten instructions, may cause an incorrect speculation and could result in data leakage.",
"evidence": "osv:DEBIAN-CVE-2021-26313",
"products": [
{
"name": {
"value": "xen",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.14.2+25-gb6a8c4f72d-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.14.2+25-gb6a8c4f72d-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.14.2+25-gb6a8c4f72d-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2021-26313",
"aliases": [
"DEBIAN-CVE-2021-26313"
],
"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": "4.14.2+25-gb6a8c4f72d-1"
}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:deb/debian/xen?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-26313.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.14.2+25-gb6a8c4f72d-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-2021-26313.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.14.2+25-gb6a8c4f72d-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-2021-26313.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T18:02:41.080861659Z",
"provider": "osv",
"upstream": [
"CVE-2021-26313"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2021-26313"
]
},
"related_cves": [
{
"value": "CVE-2021-26313",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 419637,
"published_at": "2021-06-09T12:15:07.75+00:00"
}