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CVE-2026-47753

Incus has a Nil-Pointer Dereference Panic via Instance Backup Import (volume omitted)

MEDIUM
4.4
CVSS Score
Published: August 21, 2026 at 02:14 PM UTC
Updated: October 15, 2026 at 07:10 PM UTC
1 product affected across 1 vendorIncus

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Severity
MEDIUM4.4
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Incus· Lxc
90%
v < 7.1.0
Affected range stops below 7.1.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

x_refsource_CONFIRM
Source: cverecord
https://github.com/lxc/incus/security/advisories/GHSA-8g7m-96c8-8wwc
x_refsource_MISC
Source: cverecord
https://github.com/lxc/incus/commit/98e64f0a6fcfdc9676eea0246418d490c53297bf

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.4MEDIUMGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-476

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