This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2021-3929 →
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DEBIAN-CVE-2021-3929

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...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 qemu
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:7.0+dfsg-1"}]}]
Debian:13 qemu
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:7.0+dfsg-1"}]}]
Debian:14 qemu
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:7.0+dfsg-1"}]}]

References

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