Use After Free Affecting qemu package, versions <6.0.0-r1


Severity

Recommended
0.0
low
0
10

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Threat Intelligence

EPSS
0.06% (26th percentile)

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  • Snyk IDSNYK-ALPINE321-QEMU-8488697
  • published6 Dec 2024
  • disclosed23 Mar 2021

Introduced: 23 Mar 2021

CVE-2021-3392  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Alpine:3.21 qemu to version 6.0.0-r1 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 use-after-free flaw was found in the MegaRAID emulator of QEMU. This issue occurs while processing SCSI I/O requests in the case of an error mptsas_free_request() that does not dequeue the request object 'req' from a pending requests queue. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. Versions between 2.10.0 and 5.2.0 are potentially affected.

CVSS Scores

version 3.1