Improper Synchronization Affecting qemu package, versions <7.1.0-r4


Severity

Recommended
0.0
high
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.04% (5th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-ALPINE321-QEMU-8488710
  • published6 Dec 2024
  • disclosed13 Sept 2022

Introduced: 13 Sep 2022

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

How to fix?

Upgrade Alpine:3.21 qemu to version 7.1.0-r4 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 Alpine. See How to fix? for Alpine:3.21 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