NULL Pointer Dereference The advisory has been revoked - it doesn't affect any version of package virt:rhel/libguestfs-bash-completion (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-ALMALINUX8-VIRT-8067606
- published20 Sept 2024
- disclosed10 May 2022
Introduced: 10 May 2022
CVE-2021-4145 (opens in a new tab)Amendment
The AlmaLinux security team deemed this advisory irrelevant for AlmaLinux:8.
NVD Description
Note: Versions mentioned in the description apply only to the upstream virt:rhel/libguestfs-bash-completion package and not the virt:rhel/libguestfs-bash-completion package as distributed by AlmaLinux.
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
- https://errata.almalinux.org/8/ALSA-2022-1759.html
- https://vulners.com/cve/CVE-2021-4145
- https://bugzilla.redhat.com/show_bug.cgi?id=2034602
- https://gitlab.com/qemu-project/qemu/-/commit/66fed30c9cd11854fc878a4eceb507e915d7c9cd
- https://security.gentoo.org/glsa/202208-27
- https://security.netapp.com/advisory/ntap-20220311-0004/