NULL Pointer Dereference Affecting incus package, versions <7.0.0-2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-INCUS-17097910
- published30 May 2026
- disclosed21 Aug 2026
Introduced: 30 May 2026
CVE-2026-48756 (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).CreateCustomVolumeFromBackup in internal/server/storage/backend.go contains an unguarded *time.Time dereference on the ExpiresAt field of every volume-snapshot entry in an imported custom-volume backup. An authenticated user with can_create_storage_volumes permission on any project can crash the incusd daemon by uploading a backup tarball whose volume_snapshots[*].expires_at field is absent. This is a sibling-field variant of GHSA-r7w7-mmxr-47r9 (CVE-2026-40197). Commit 985a1dedf9f3e7ba729c93b654905ed510de25c2 added if s == nil at the top of the loop body, but did not guard the adjacent *snapshot.ExpiresAt deref 19 lines later. Every other consumer of Config.VolumeSnapshots[i].ExpiresAt in this same file already gates the deref with a nil-check — the asymmetric guard is the bug. Version 7.1.0 contains an updated patch.