CVE-2021-4145

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-4145
A NULL pointer dereference issue was found in the block mirror layer of QEMU in versions prior to 6.2.0. The `self` pointer is dereferenced in mirror_wait_on_conflicts() without ensuring that it's not NULL. A malicious unprivileged user within the guest could use this flaw to crash the QEMU process on the host when writing data reaches the threshold of mirroring node.

6.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.0 / Impact : 4.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

4.9 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:L/AC:L/Au:N/C:N/I:N/A:C

Exploitability : 3.9 / Impact : 6.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References
Link Resource
https://bugzilla.redhat.com/show_bug.cgi?id=2034602 Issue Tracking Patch Third Party Advisory
https://gitlab.com/qemu-project/qemu/-/commit/66fed30c9cd11854fc878a4eceb507e915d7c9cd Patch Third Party Advisory
https://security.gentoo.org/glsa/202208-27 Third Party Advisory
https://security.netapp.com/advisory/ntap-20220311-0004/ Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2034602 Issue Tracking Patch Third Party Advisory
https://gitlab.com/qemu-project/qemu/-/commit/66fed30c9cd11854fc878a4eceb507e915d7c9cd Patch Third Party Advisory
https://security.gentoo.org/glsa/202208-27 Third Party Advisory
https://security.netapp.com/advisory/ntap-20220311-0004/ Third Party Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:qemu:qemu:6.1.0:-:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:6.1.0:rc0:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:6.1.0:rc1:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:6.1.0:rc2:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:6.1.0:rc3:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:6.1.0:rc4:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*
History

21 Nov 2024, 06:36

Type Values Removed Values Added
References () https://bugzilla.redhat.com/show_bug.cgi?id=2034602 - Issue Tracking, Patch, Third Party Advisory () https://bugzilla.redhat.com/show_bug.cgi?id=2034602 - Issue Tracking, Patch, Third Party Advisory
References () https://gitlab.com/qemu-project/qemu/-/commit/66fed30c9cd11854fc878a4eceb507e915d7c9cd - Patch, Third Party Advisory () https://gitlab.com/qemu-project/qemu/-/commit/66fed30c9cd11854fc878a4eceb507e915d7c9cd - Patch, Third Party Advisory
References () https://security.gentoo.org/glsa/202208-27 - Third Party Advisory () https://security.gentoo.org/glsa/202208-27 - Third Party Advisory
References () https://security.netapp.com/advisory/ntap-20220311-0004/ - Third Party Advisory () https://security.netapp.com/advisory/ntap-20220311-0004/ - Third Party Advisory

15 Aug 2022, 11:15

Type Values Removed Values Added
References
  • (GENTOO) https://security.gentoo.org/glsa/202208-27 -

15 Mar 2022, 14:06

Type Values Removed Values Added
CPE cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:6.2.0:rc4:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:6.2.0:rc0:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:6.2.0:rc3:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:6.2.0:rc2:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:6.2.0:rc1:*:*:*:*:*:*		 cpe:2.3:a:qemu:qemu:6.1.0:rc1:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:6.1.0:rc4:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:6.1.0:rc2:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:6.1.0:-:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:6.1.0:rc3:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:6.1.0:rc0:*:*:*:*:*:*
References (CONFIRM) https://security.netapp.com/advisory/ntap-20220311-0004/ - (CONFIRM) https://security.netapp.com/advisory/ntap-20220311-0004/ - Third Party Advisory

11 Mar 2022, 09:15

Type Values Removed Values Added
References
  • (CONFIRM) https://security.netapp.com/advisory/ntap-20220311-0004/ -

01 Feb 2022, 15:03

Type Values Removed Values Added
References (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=2034602 - (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=2034602 - Issue Tracking, Patch, Third Party Advisory
References (MISC) https://gitlab.com/qemu-project/qemu/-/commit/66fed30c9cd11854fc878a4eceb507e915d7c9cd - (MISC) https://gitlab.com/qemu-project/qemu/-/commit/66fed30c9cd11854fc878a4eceb507e915d7c9cd - Patch, Third Party Advisory
CPE cpe:2.3:a:qemu:qemu:6.2.0:rc1:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:6.2.0:rc3:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*
cpe:2.3:a:qemu:qemu:6.2.0:rc4:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:6.2.0:rc0:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:6.2.0:rc2:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : 4.9
v3 : 6.5
CWE CWE-476

31 Jan 2022, 16:15

Type Values Removed Values Added
References
  • (MISC) https://gitlab.com/qemu-project/qemu/-/commit/66fed30c9cd11854fc878a4eceb507e915d7c9cd -

25 Jan 2022, 20:19

Type Values Removed Values Added
New CVE
Information

Published : 2022-01-25 20:15

Updated : 2024-11-21 06:36

NVD link : CVE-2021-4145

Mitre link : CVE-2021-4145

CVE.ORG link : CVE-2021-4145

JSON object : View

Products Affected

qemu

  • qemu

redhat

  • enterprise_linux
CWE
CWE-476

NULL Pointer Dereference