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.
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)
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Configuration 2 (hide)
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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 | |
| References | () https://gitlab.com/qemu-project/qemu/-/commit/66fed30c9cd11854fc878a4eceb507e915d7c9cd - Patch, Third Party Advisory | |
| References | () https://security.gentoo.org/glsa/202208-27 - Third Party Advisory | |
| References | () https://security.netapp.com/advisory/ntap-20220311-0004/ - Third Party Advisory |
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