CVE-2026-47753 (GCVE-0-2026-47753)

Vulnerability from cvelistv5 – Published: 2026-08-21 14:14 – Updated: 2026-08-21 14:39
VLAI
Title
Incus has a Nil-Pointer Dereference Panic via Instance Backup Import (volume omitted)
Summary
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.
Severity
4.4 (Medium)
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 14:37 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7626 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
lxc incus Affected: < 7.1.0
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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