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NVD Vulnerability Details :
CVE-2021-4095
Modified
More InfoOfficial Page
Source-secalert@redhat.com
View Known Exploited Vulnerability (KEV) details
Published At-10 Mar, 2022 | 17:44
Updated At-07 Nov, 2023 | 03:40

A NULL pointer dereference was found in the Linux kernel's KVM when dirty ring logging is enabled without an active vCPU context. An unprivileged local attacker on the host may use this flaw to cause a kernel oops condition and thus a denial of service by issuing a KVM_XEN_HVM_SET_ATTR ioctl. This flaw affects Linux kernel versions prior to 5.17-rc1.

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
Primary3.15.5MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Primary2.01.9LOW
AV:L/AC:M/Au:N/C:N/I:N/A:P
Type: Primary
Version: 3.1
Base score: 5.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Type: Primary
Version: 2.0
Base score: 1.9
Base severity: LOW
Vector:
AV:L/AC:M/Au:N/C:N/I:N/A:P
CPE Matches
Linux Kernel Organization, Inc
linux
>>linux_kernel>>Versions up to 5.16(inclusive)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Fedora Project
fedoraproject
>>fedora>>34
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Fedora Project
fedoraproject
>>fedora>>35
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-476Primarynvd@nist.gov
CWE-476Secondarysecalert@redhat.com
CWE ID: CWE-476
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-476
Type: Secondary
Source: secalert@redhat.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
http://www.openwall.com/lists/oss-security/2022/01/17/1secalert@redhat.com
Exploit
Mailing List
Patch
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2031194secalert@redhat.com
Exploit
Issue Tracking
Patch
Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QIOQN7JJNN6ABIDGRSTVZA65MHRLMH2Q/secalert@redhat.com
N/A
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VT6573CGKVK3DU2632VVO5BVM4IU7SBV/secalert@redhat.com
N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2022/01/17/1
Source: secalert@redhat.com
Resource:
Exploit
Mailing List
Patch
Third Party Advisory
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2031194
Source: secalert@redhat.com
Resource:
Exploit
Issue Tracking
Patch
Third Party Advisory
Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QIOQN7JJNN6ABIDGRSTVZA65MHRLMH2Q/
Source: secalert@redhat.com
Resource: N/A
Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VT6573CGKVK3DU2632VVO5BVM4IU7SBV/
Source: secalert@redhat.com
Resource: N/A
Change History
0Changes found
Details not found