NULL Pointer Dereference Affecting incus package, versions <7.0.0-2


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.14% (4th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-INCUS-17097907
  • published30 May 2026
  • disclosed21 Aug 2026

Introduced: 30 May 2026

CVE-2026-47753  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Debian:unstable incus to version 7.0.0-2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream incus package and not the incus package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

Incus is a system container and virtual machine manager. Prior to version 7.1.0, (*backend).CreateInstanceFromBackup in internal/server/storage/backend.go contains a nil-pointer dereference that an authenticated user with permission to create instances in any project can trigger remotely by uploading a crafted backup tarball. The Incus daemon panics and the process crashes, causing denial of service to every project on that cluster member. This is a sibling of GHSA-fwj8-62r8-8p8m, GHSA-r7w7-mmxr-47r9, and GHSA-x5r6-jr56-89pv (all assigned 2026-05-04). Those patches added guards on adjacent fields of the same backup/config.Config struct; the Volume field on the instance-import path was missed. Version 7.1.0 contains an updated patch.