Bug 2521984 - CVE-2026-47753 incus: Incus: Denial of Service due to nil-pointer dereference during instance backup import [fedora-all]
Summary: CVE-2026-47753 incus: Incus: Denial of Service due to nil-pointer dereference...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: incus
Version: rawhide
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Neal Gompa
QA Contact:
URL:
Whiteboard: {"flaws": ["88a6ece4-ac2d-4f65-a0e3-e...
Depends On:
Blocks: CVE-2026-47753
TreeView+ depends on / blocked
 
Reported: 2026-08-24 14:51 UTC by Laura Pardo
Modified: 2026-08-24 14:51 UTC (History)
7 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Laura Pardo 2026-08-24 14:51:55 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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.


Note You need to log in before you can comment on or make changes to this bug.