Heap-based Buffer Overflow Affecting qemu-guest-agent package, versions <17:10.1.0-17.el9_8.4


Severity

Recommended
low

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.16% (6th percentile)

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  • Snyk IDSNYK-ORACLE9-QEMUGUESTAGENT-17983705
  • published15 Jul 2026
  • disclosed12 Jun 2026

Introduced: 12 Jun 2026

CVE-2026-48914  (opens in a new tab)
CWE-122  (opens in a new tab)

How to fix?

Upgrade Oracle:9 qemu-guest-agent to version 17:10.1.0-17.el9_8.4 or higher.
This issue was patched in ELSA-2026-39311.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-guest-agent package and not the qemu-guest-agent package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

A flaw was found in QEMU's virtio-blk device. The issue arises because the device does not properly validate the size of input descriptors before writing data. A malicious guest with high privileges could exploit this vulnerability by submitting a malformed virtio-blk SCSI request, leading to an out-of-bounds write in the host heap memory and a potential denial of service (DoS) for the QEMU process.

CVSS Base Scores

version 3.1