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CERTFR-2025-AVI-0771
Vulnerability from certfr_avis - Published: - Updated:
De multiples vulnérabilités ont été découvertes dans Xen. Certaines d'entre elles permettent à un attaquant de provoquer une élévation de privilèges, un déni de service à distance et une atteinte à la confidentialité des données.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
References
| Title | Publication Time | Tags | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Xen versions 4.19.x sans le correctif xsa473-?.patch",
"product": {
"name": "Xen",
"vendor": {
"name": "XEN",
"scada": false
}
}
},
{
"description": "XAPI sans le correctif xsa474.patch ",
"product": {
"name": "N/A",
"vendor": {
"name": "XEN",
"scada": false
}
}
},
{
"description": "Xen versions 4.17.x sans les correctifs xsa472-?.patch et xsa473-4.18-?.patch",
"product": {
"name": "Xen",
"vendor": {
"name": "XEN",
"scada": false
}
}
},
{
"description": "Xen versions 4.18.x sans le correctif xsa473-4.18-?.patch",
"product": {
"name": "Xen",
"vendor": {
"name": "XEN",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2025-27466",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-27466"
},
{
"name": "CVE-2025-58142",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-58142"
},
{
"name": "CVE-2025-58145",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-58145"
},
{
"name": "CVE-2025-58144",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-58144"
},
{
"name": "CVE-2025-58146",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-58146"
},
{
"name": "CVE-2025-58143",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-58143"
}
],
"links": [],
"reference": "CERTFR-2025-AVI-0771",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2025-09-10T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
},
{
"description": "\u00c9l\u00e9vation de privil\u00e8ges"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Xen. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer une \u00e9l\u00e9vation de privil\u00e8ges, un d\u00e9ni de service \u00e0 distance et une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans Xen",
"vendor_advisories": [
{
"published_at": "2025-09-09",
"title": "Bulletin de s\u00e9curit\u00e9 Xen xsa/advisory-473",
"url": "https://xenbits.xen.org/xsa/advisory-473.html"
},
{
"published_at": "2025-09-09",
"title": "Bulletin de s\u00e9curit\u00e9 Xen xsa/advisory-472",
"url": "https://xenbits.xen.org/xsa/advisory-472.html"
},
{
"published_at": "2025-09-09",
"title": "Bulletin de s\u00e9curit\u00e9 Xen xsa/advisory-474",
"url": "https://xenbits.xen.org/xsa/advisory-474.html"
}
]
}
CVE-2025-27466 (GCVE-0-2025-27466)
Vulnerability from cvelistv5 – Published: 2025-09-11 14:05 – Updated: 2025-11-04 21:09
VLAI
EPSS
VEX
Title
Mutiple vulnerabilities in the Viridian interface
Summary
[This CNA information record relates to multiple CVEs; the
text explains which aspects/vulnerabilities correspond to which CVE.]
There are multiple issues related to the handling and accessing of guest
memory pages in the viridian code:
1. A NULL pointer dereference in the updating of the reference TSC area.
This is CVE-2025-27466.
2. A NULL pointer dereference by assuming the SIM page is mapped when
a synthetic timer message has to be delivered. This is
CVE-2025-58142.
3. A race in the mapping of the reference TSC page, where a guest can
get Xen to free a page while still present in the guest physical to
machine (p2m) page tables. This is CVE-2025-58143.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-395 - Use of NullPointerException Catch to Detect NULL Pointer Dereference
Assigner
References
Date Public
2025-09-09 11:53
Credits
This issue was discovered by Roger Pau Monné of XenServer.
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"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
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"dateReserved": "2025-02-26T09:16:54.462Z",
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"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-58142 (GCVE-0-2025-58142)
Vulnerability from cvelistv5 – Published: 2025-09-11 14:05 – Updated: 2025-11-04 21:13
VLAI
EPSS
VEX
Title
Mutiple vulnerabilities in the Viridian interface
Summary
[This CNA information record relates to multiple CVEs; the
text explains which aspects/vulnerabilities correspond to which CVE.]
There are multiple issues related to the handling and accessing of guest
memory pages in the viridian code:
1. A NULL pointer dereference in the updating of the reference TSC area.
This is CVE-2025-27466.
2. A NULL pointer dereference by assuming the SIM page is mapped when
a synthetic timer message has to be delivered. This is
CVE-2025-58142.
3. A race in the mapping of the reference TSC page, where a guest can
get Xen to free a page while still present in the guest physical to
machine (p2m) page tables. This is CVE-2025-58143.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-395 - Use of NullPointerException Catch to Detect NULL Pointer Dereference
Assigner
References
Date Public
2025-09-09 11:53
Credits
This issue was discovered by Roger Pau Monné of XenServer.
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"title": "CISA ADP Vulnrichment"
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CVE-2025-58143 (GCVE-0-2025-58143)
Vulnerability from cvelistv5 – Published: 2025-09-11 14:05 – Updated: 2025-11-04 21:13
VLAI
EPSS
VEX
Title
Mutiple vulnerabilities in the Viridian interface
Summary
[This CNA information record relates to multiple CVEs; the
text explains which aspects/vulnerabilities correspond to which CVE.]
There are multiple issues related to the handling and accessing of guest
memory pages in the viridian code:
1. A NULL pointer dereference in the updating of the reference TSC area.
This is CVE-2025-27466.
2. A NULL pointer dereference by assuming the SIM page is mapped when
a synthetic timer message has to be delivered. This is
CVE-2025-58142.
3. A race in the mapping of the reference TSC page, where a guest can
get Xen to free a page while still present in the guest physical to
machine (p2m) page tables. This is CVE-2025-58143.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-366 - Race Condition within a Thread
Assigner
References
Date Public
2025-09-09 11:53
Credits
This issue was discovered by Roger Pau Monné of XenServer.
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"datePublished": "2025-09-11T14:05:29.729Z",
"dateReserved": "2025-08-26T06:48:41.443Z",
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"state": "PUBLISHED"
},
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CVE-2025-58144 (GCVE-0-2025-58144)
Vulnerability from cvelistv5 – Published: 2025-09-11 14:05 – Updated: 2025-11-04 21:13
VLAI
EPSS
VEX
Title
Arm issues with page refcounting
Summary
[This CNA information record relates to multiple CVEs; the
text explains which aspects/vulnerabilities correspond to which CVE.]
There are two issues related to the mapping of pages belonging to other
domains: For one, an assertion is wrong there, where the case actually
needs handling. A NULL pointer de-reference could result on a release
build. This is CVE-2025-58144.
And then the P2M lock isn't held until a page reference was actually
obtained (or the attempt to do so has failed). Otherwise the page can
not only change type, but even ownership in between, thus allowing
domain boundaries to be violated. This is CVE-2025-58145.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
Date Public
2025-09-09 11:53
Credits
This issue was discovered by Jan Beulich of SUSE.
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CVE-2025-58145 (GCVE-0-2025-58145)
Vulnerability from cvelistv5 – Published: 2025-09-11 14:05 – Updated: 2025-11-04 21:13
VLAI
EPSS
VEX
Title
Arm issues with page refcounting
Summary
[This CNA information record relates to multiple CVEs; the
text explains which aspects/vulnerabilities correspond to which CVE.]
There are two issues related to the mapping of pages belonging to other
domains: For one, an assertion is wrong there, where the case actually
needs handling. A NULL pointer de-reference could result on a release
build. This is CVE-2025-58144.
And then the P2M lock isn't held until a page reference was actually
obtained (or the attempt to do so has failed). Otherwise the page can
not only change type, but even ownership in between, thus allowing
domain boundaries to be violated. This is CVE-2025-58145.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
Date Public
2025-09-09 11:53
Credits
This issue was discovered by Jan Beulich of SUSE.
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CVE-2025-58146 (GCVE-0-2025-58146)
Vulnerability from cvelistv5 – Published: 2026-07-09 14:42 – Updated: 2026-07-09 16:07
VLAI
EPSS
VEX
Title
XAPI UTF-8 string handling
Summary
There are multiple issues.
1. Updates to the XAPI database sanitise input strings, but try
generating the notification using the unsanitised input. This
causes the database's event thread to terminate and cease further
processing.
2. XAPI's UTF-8 encoder implements v3.0 of the Unicode spec, but XAPI
uses libraries which conform to the stricter v3.1 of the Unicode
spec. This causes some strings to be accepted as valid UTF-8 by
XAPI, but rejected by other libraries in use. Notably, such strings
can be entered into the database, after which the database can no
longer be loaded.
3. There is no input sanitisation for Map/Set updates on objects in the
XAPI database.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-20 - Improper input validation
Assigner
References
Date Public
2025-09-09 12:00
Credits
This issue was discovered by Edwin Török from XenServer.
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Loading…
Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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