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Vulnerability Details :

CVE-2022-26363

Summary
Assigner-XEN
Assigner Org ID-23aa2041-22e1-471f-9209-9b7396fa234f
Published At-09 Jun, 2022 | 12:50
Updated At-03 Aug, 2024 | 05:03
Rejected At-
Credits

x86 pv: Insufficient care with non-coherent mappings T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Xen maintains a type reference count for pages, in addition to a regular reference count. This scheme is used to maintain invariants required for Xen's safety, e.g. PV guests may not have direct writeable access to pagetables; updates need auditing by Xen. Unfortunately, Xen's safety logic doesn't account for CPU-induced cache non-coherency; cases where the CPU can cause the content of the cache to be different to the content in main memory. In such cases, Xen's safety logic can incorrectly conclude that the contents of a page is safe.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:XEN
Assigner Org ID:23aa2041-22e1-471f-9209-9b7396fa234f
Published At:09 Jun, 2022 | 12:50
Updated At:03 Aug, 2024 | 05:03
Rejected At:
▼CVE Numbering Authority (CNA)

x86 pv: Insufficient care with non-coherent mappings T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Xen maintains a type reference count for pages, in addition to a regular reference count. This scheme is used to maintain invariants required for Xen's safety, e.g. PV guests may not have direct writeable access to pagetables; updates need auditing by Xen. Unfortunately, Xen's safety logic doesn't account for CPU-induced cache non-coherency; cases where the CPU can cause the content of the cache to be different to the content in main memory. In such cases, Xen's safety logic can incorrectly conclude that the contents of a page is safe.

Affected Products
Vendor
Xen ProjectXen
Product
xen
Versions

unknown

  • consult Xen advisory XSA-402
Problem Types
TypeCWE IDDescription
textN/Aunknown
Type: text
CWE ID: N/A
Description: unknown
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
unknown
description:
description_data:
lang:
eng
value:
Malicious x86 PV guest administrators can escalate privilege so as to control the whole system.
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
{'credit_data': {'description': {'description_data': [{'lang': 'eng', 'value': 'This issue was discovered by Jann Horn of Google Project Zero.'}]}}}
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://xenbits.xenproject.org/xsa/advisory-402.txt
x_refsource_MISC
http://xenbits.xen.org/xsa/advisory-402.html
x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2022/06/09/4
mailing-list
x_refsource_MLIST
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OH65U6FTTB5MLH5A6Q3TW7KVCGOG4MYI/
vendor-advisory
x_refsource_FEDORA
https://www.debian.org/security/2022/dsa-5184
vendor-advisory
x_refsource_DEBIAN
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/
vendor-advisory
x_refsource_FEDORA
https://security.gentoo.org/glsa/202208-23
vendor-advisory
x_refsource_GENTOO
Hyperlink: https://xenbits.xenproject.org/xsa/advisory-402.txt
Resource:
x_refsource_MISC
Hyperlink: http://xenbits.xen.org/xsa/advisory-402.html
Resource:
x_refsource_CONFIRM
Hyperlink: http://www.openwall.com/lists/oss-security/2022/06/09/4
Resource:
mailing-list
x_refsource_MLIST
Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OH65U6FTTB5MLH5A6Q3TW7KVCGOG4MYI/
Resource:
vendor-advisory
x_refsource_FEDORA
Hyperlink: https://www.debian.org/security/2022/dsa-5184
Resource:
vendor-advisory
x_refsource_DEBIAN
Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/
Resource:
vendor-advisory
x_refsource_FEDORA
Hyperlink: https://security.gentoo.org/glsa/202208-23
Resource:
vendor-advisory
x_refsource_GENTOO
▼Authorized Data Publishers (ADP)
CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://xenbits.xenproject.org/xsa/advisory-402.txt
x_refsource_MISC
x_transferred
http://xenbits.xen.org/xsa/advisory-402.html
x_refsource_CONFIRM
x_transferred
http://www.openwall.com/lists/oss-security/2022/06/09/4
mailing-list
x_refsource_MLIST
x_transferred
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OH65U6FTTB5MLH5A6Q3TW7KVCGOG4MYI/
vendor-advisory
x_refsource_FEDORA
x_transferred
https://www.debian.org/security/2022/dsa-5184
vendor-advisory
x_refsource_DEBIAN
x_transferred
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/
vendor-advisory
x_refsource_FEDORA
x_transferred
https://security.gentoo.org/glsa/202208-23
vendor-advisory
x_refsource_GENTOO
x_transferred
Hyperlink: https://xenbits.xenproject.org/xsa/advisory-402.txt
Resource:
x_refsource_MISC
x_transferred
Hyperlink: http://xenbits.xen.org/xsa/advisory-402.html
Resource:
x_refsource_CONFIRM
x_transferred
Hyperlink: http://www.openwall.com/lists/oss-security/2022/06/09/4
Resource:
mailing-list
x_refsource_MLIST
x_transferred
Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OH65U6FTTB5MLH5A6Q3TW7KVCGOG4MYI/
Resource:
vendor-advisory
x_refsource_FEDORA
x_transferred
Hyperlink: https://www.debian.org/security/2022/dsa-5184
Resource:
vendor-advisory
x_refsource_DEBIAN
x_transferred
Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/
Resource:
vendor-advisory
x_refsource_FEDORA
x_transferred
Hyperlink: https://security.gentoo.org/glsa/202208-23
Resource:
vendor-advisory
x_refsource_GENTOO
x_transferred
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security@xen.org
Published At:09 Jun, 2022 | 17:15
Updated At:07 Nov, 2023 | 03:44

x86 pv: Insufficient care with non-coherent mappings T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Xen maintains a type reference count for pages, in addition to a regular reference count. This scheme is used to maintain invariants required for Xen's safety, e.g. PV guests may not have direct writeable access to pagetables; updates need auditing by Xen. Unfortunately, Xen's safety logic doesn't account for CPU-induced cache non-coherency; cases where the CPU can cause the content of the cache to be different to the content in main memory. In such cases, Xen's safety logic can incorrectly conclude that the contents of a page is safe.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.16.7MEDIUM
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Primary2.07.2HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C
Type: Primary
Version: 3.1
Base score: 6.7
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Type: Primary
Version: 2.0
Base score: 7.2
Base severity: HIGH
Vector:
AV:L/AC:L/Au:N/C:C/I:C/A:C
CPE Matches
Xen Project
xen
>>xen>>*
cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:*
Fedora Project
fedoraproject
>>fedora>>35
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
Fedora Project
fedoraproject
>>fedora>>36
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
Debian GNU/Linux
debian
>>debian_linux>>11.0
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
NVD-CWE-noinfoPrimarynvd@nist.gov
CWE ID: NVD-CWE-noinfo
Type: Primary
Source: nvd@nist.gov
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
http://www.openwall.com/lists/oss-security/2022/06/09/4security@xen.org
Mailing List
Third Party Advisory
http://xenbits.xen.org/xsa/advisory-402.htmlsecurity@xen.org
Patch
Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OH65U6FTTB5MLH5A6Q3TW7KVCGOG4MYI/security@xen.org
N/A
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/security@xen.org
N/A
https://security.gentoo.org/glsa/202208-23security@xen.org
Third Party Advisory
https://www.debian.org/security/2022/dsa-5184security@xen.org
Third Party Advisory
https://xenbits.xenproject.org/xsa/advisory-402.txtsecurity@xen.org
Vendor Advisory
Hyperlink: http://www.openwall.com/lists/oss-security/2022/06/09/4
Source: security@xen.org
Resource:
Mailing List
Third Party Advisory
Hyperlink: http://xenbits.xen.org/xsa/advisory-402.html
Source: security@xen.org
Resource:
Patch
Vendor Advisory
Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OH65U6FTTB5MLH5A6Q3TW7KVCGOG4MYI/
Source: security@xen.org
Resource: N/A
Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/
Source: security@xen.org
Resource: N/A
Hyperlink: https://security.gentoo.org/glsa/202208-23
Source: security@xen.org
Resource:
Third Party Advisory
Hyperlink: https://www.debian.org/security/2022/dsa-5184
Source: security@xen.org
Resource:
Third Party Advisory
Hyperlink: https://xenbits.xenproject.org/xsa/advisory-402.txt
Source: security@xen.org
Resource:
Vendor Advisory

Change History

0
Information is not available yet

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