Out-of-bounds Write Affecting qemu package, versions <1:11.1.2+ds-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.19% (8th percentile)

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  • Snyk IDSNYK-DEBIAN14-QEMU-19956424
  • published19 Sept 2026
  • disclosed18 Sept 2026

Introduced: 18 Sep 2026

NewCVE-2026-81627  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Debian:14 qemu to version 1:11.1.2+ds-1 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 Debian. See How to fix? for Debian:14 relevant fixed versions and status.

A flaw was found in QEMU. The VAPIC setup hypercall in hw/i386/vapic.c does not validate that the writable RAM alias remains within the option ROM window. A privileged guest user on a Q35/KVM machine can position this alias over locked SMRAM, bypassing chipset D_LCK protection and injecting code into System Management Mode memory.

CVSS Base Scores

version 3.1