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CVE-2021-4145

UNKNOWN
Published 2022-01-25T19:11:14
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Expert Analysis

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No CVSS data available

Description

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-j9qg-fc9x-6r3r

Advisory Details

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.

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-4145
WEB https://bugzilla.redhat.com/show_bug.cgi?id=2034602
WEB https://gitlab.com/qemu-project/qemu/-/commit/66fed30c9cd11854fc878a4eceb507e915d7c9cd
WEB https://security.gentoo.org/glsa/202208-27
WEB https://security.netapp.com/advisory/ntap-20220311-0004

Advisory provided by GitHub Security Advisory Database. Published: January 26, 2022, Modified: March 17, 2022

References

https://bugzilla.redhat.com/show_bug.cgi?id=2034602
https://gitlab.com/qemu-project/qemu/-/commit/66fed30c9cd11854fc878a4eceb507e915d7c9cd
https://security.netapp.com/advisory/ntap-20220311-0004/
https://security.gentoo.org/glsa/202208-27
Published: 2022-01-25T19:11:14
Last Modified: 2024-08-03T17:16:04.234Z
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