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Use After Free The advisory has been revoked - it doesn't affect any version of package qemu Open this link in a new tab

    Threat Intelligence

    EPSS 0.07% (30th percentile)
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NVD
8.2 high
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SUSE
8.2 high
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Red Hat
8.2 high

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  • Snyk ID SNYK-DEBIAN10-QEMU-2321468
  • published 17 Dec 2021
  • disclosed 25 Aug 2022
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Introduced: 17 Dec 2021

CVE-2021-3929 Open this link in a new tab
CWE-416 Open this link in a new tab

Amendment

The Debian security team deemed this advisory irrelevant for Debian:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Debian.

A DMA reentrancy issue was found in the NVM Express Controller (NVME) emulation in QEMU. This CVE is similar to CVE-2021-3750 and, just like it, when the reentrancy write triggers the reset function nvme_ctrl_reset(), data structs will be freed leading to a use-after-free issue. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition or, potentially, executing arbitrary code within the context of the QEMU process on the host.