Improper Synchronization Affecting qemu package, versions <1:7.1+dfsg-2
Snyk CVSS
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Test your applications- Snyk ID SNYK-DEBIAN12-QEMU-2990236
- published 24 Aug 2022
- disclosed 13 Sep 2022
Introduced: 24 Aug 2022
CVE-2022-2962 Open this link in a new tabHow to fix?
Upgrade Debian:12 qemu to version 1:7.1+dfsg-2 or higher.
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:12 relevant fixed versions and status.
A DMA reentrancy issue was found in the Tulip device emulation in QEMU. When Tulip reads or writes to the rx/tx descriptor or copies the rx/tx frame, it doesn't check whether the destination address is its own MMIO address. This can cause the device to trigger MMIO handlers multiple times, possibly leading to a stack or heap overflow. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.