Improper Synchronization Affecting qemu package, versions <1:7.1+dfsg-2


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.05% (20th percentile)

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  • Snyk IDSNYK-DEBIAN13-QEMU-5693564
  • published24 Aug 2022
  • disclosed13 Sept 2022

Introduced: 24 Aug 2022

CVE-2022-2962  (opens in a new tab)
CWE-662  (opens in a new tab)

How to fix?

Upgrade Debian:13 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:13 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.

CVSS Scores

version 3.1