Use After Free Affecting qemu package, versions *
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Test your applications- Snyk ID SNYK-DEBIAN11-QEMU-2321473
- published 17 Dec 2021
- disclosed 25 Aug 2022
Introduced: 17 Dec 2021
CVE-2021-3929 Open this link in a new tabHow to fix?
There is no fixed version for Debian:11
qemu
.
NVD Description
Note: Versions mentioned in the description apply only to the upstream qemu
package and not the qemu
package as distributed by Debian
.
See How to fix?
for Debian:11
relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2021-3929
- https://gitlab.com/qemu-project/qemu/-/commit/736b01642d85be832385
- https://bugzilla.redhat.com/show_bug.cgi?id=2020298
- https://gitlab.com/qemu-project/qemu/-/issues/556
- https://access.redhat.com/security/cve/CVE-2021-3929
- https://gitlab.com/qemu-project/qemu/-/issues/782
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XHNN7QJCEQH7AQG5AQP2GEFAQE6K635I/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XHNN7QJCEQH7AQG5AQP2GEFAQE6K635I/