Use After Free Affecting libvirt-daemon-driver-nwfilter package, versions <0:9.0.0-5.module+el8.9.0+90173+a3f3e83a


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.13% (49th percentile)

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  • Snyk IDSNYK-ORACLE8-LIBVIRTDAEMONDRIVERNWFILTER-6081111
  • published23 Nov 2023
  • disclosed2 May 2022

Introduced: 2 May 2022

CVE-2021-3750  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Oracle:8 libvirt-daemon-driver-nwfilter to version 0:9.0.0-5.module+el8.9.0+90173+a3f3e83a or higher.
This issue was patched in ELSA-2024-12276.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libvirt-daemon-driver-nwfilter package and not the libvirt-daemon-driver-nwfilter package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

A DMA reentrancy issue was found in the USB EHCI controller emulation of QEMU. EHCI does not verify if the Buffer Pointer overlaps with its MMIO region when it transfers the USB packets. Crafted content may be written to the controller's registers and trigger undesirable actions (such as reset) while the device is still transferring packets. This can ultimately lead to a use-after-free issue. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or potentially execute arbitrary code within the context of the QEMU process on the host. This flaw affects QEMU versions before 7.0.0.

CVSS Scores

version 3.1