Stack-based Buffer Overflow Affecting qemu-kvm-common package, versions <15:6.2.0-49.module+el8.10.0+21533+3df3c4b6


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-CENTOS8-QEMUKVMCOMMON-6141812
  • published2 Jan 2024
  • disclosed2 Jan 2024

Introduced: 2 Jan 2024

CVE-2023-6693  (opens in a new tab)
CWE-121  (opens in a new tab)

How to fix?

Upgrade Centos:8 qemu-kvm-common to version 15:6.2.0-49.module+el8.10.0+21533+3df3c4b6 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-kvm-common package and not the qemu-kvm-common package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

A stack based buffer overflow was found in the virtio-net device of QEMU. This issue occurs when flushing TX in the virtio_net_flush_tx function if guest features VIRTIO_NET_F_HASH_REPORT, VIRTIO_F_VERSION_1 and VIRTIO_NET_F_MRG_RXBUF are enabled. This could allow a malicious user to overwrite local variables allocated on the stack. Specifically, the out_sg variable could be used to read a part of process memory and send it to the wire, causing an information leak.

CVSS Scores

version 3.1