CVE-2026-40197

incus: Incus is a system container and virtual machine manager

CVE-2026-40197 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2026-40197, released May 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
6.5
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0039
32nd percentile

Incus is a system container and virtual machine manager. In versions before 7.0.0, missing validation logic in the storage volume import logic allows an authenticated user with access to the storage volume feature to cause the Incus daemon to crash. The custom volume backup import subsystem contains a nil-pointer dereference vulnerability during import operations. In the snapshot import loop, the daemon iterates over entries from `srcBackup.Config.VolumeSnapshots` and assumes that each slice element is initialized, then dereferences fields such as `Name`, `Config`, `Description`, `CreatedAt`, and `ExpiresAt` without first validating the element itself. Because the yaml unmarshaler accepts explicit null array elements from an attacker-controlled index.yaml and converts them into nil pointers inside the slice, an attacker can supply a backup archive containing a null entry in the volume_snapshots array. This causes a nil-pointer dereference during custom volume import and terminates the daemon, resulting in denial of service on the affected node. Repeated use of this issue can be used to keep Incus offline, causing a denial of service. This issue is fixed in version 7.0.0.

Where it's fixed

ProductFixed inFixReleased
Linux
govulncheck-vulndb · opensuse-leap 16.0 0.0.20260723T184607-160000.1.1 OPENSUSE-SU-2026:21483-1 Jul 30, 2026
incus · Debian 13.5 (trixie) 6.0.4-2+deb13u7 DEBIAN-CVE-2026-40197 May 15, 2026
incus · Debian 14 7.0.0-1 DEBIAN-CVE-2026-40197 May 15, 2026
lxd · Debian 13.5 (trixie) 5.0.2+git20231211.1364ae4-9+deb13u6 DEBIAN-CVE-2026-40197 May 15, 2026

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