ALPINE-CVE-2026-23557
Any guest can cause xenstored to crash by issuing a XS_RESET_WATCHES command within a transaction due to an assert() triggering. In case xenstored was built with NDEBUG #defined nothing bad will happen, as assert() is doing nothing in this case. Note that the default is not to define NDEBUG for xenstored builds even in release builds of Xen.
ALPINE-CVE-2026-23557
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:ALPINE-CVE-2026-23557
xen
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 4.18.5-r7
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
xen
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 4.19.5-r2
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
xen
Source reference: /affected/2/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 4.20.3-r2
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
xen
Source reference: /affected/3/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 4.20.3-r2
Source reference:
/affected/3/ranges - Prerequisites
- Not stated in this record
xen
Source reference: /affected/4/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 4.21.1-r3
Source reference:
/affected/4/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.2.0"
},
{
"fixed": "4.18.5-r7"
}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.20"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-23557.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.2.0"
},
{
"fixed": "4.19.5-r2"
}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.21"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-23557.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.2.0"
},
{
"fixed": "4.20.3-r2"
}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.22"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-23557.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.2.0"
},
{
"fixed": "4.20.3-r2"
}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.23"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-23557.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.2.0"
},
{
"fixed": "4.21.1-r3"
}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.24"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-23557.json"
},
"ecosystem_specific": {}
}
]Publisher severity
No explicit severity was provided.
- Event
- #54181 · Revision 1
- Added to Heist Feed
- Publisher date