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CVE-2022-2962

Published: 13 September 2022

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.

Priority

Low

CVSS 3 base score: 7.8

Status

Package Release Status
qemu
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code not present)
focal Not vulnerable
(code not present)
jammy Not vulnerable
(code not present)
kinetic
Released (1:7.0+dfsg-7ubuntu2.1)
trusty Not vulnerable
(code not present)
upstream Needs triage

xenial Not vulnerable
(code not present)
Patches:
upstream: https://gitlab.com/qemu-project/qemu/-/commit/36a894aeb64a2e02871016d