CyberRota Analysis
AI-GeneratedThe vulnerability affects the Incus system container and virtual machine manager, specifically in the `CreateCustomVolumeFromBackup` function, where an unguarded dereference of the `ExpiresAt` field can lead to a crash of the `incusd` daemon when an authenticated user uploads a backup with a missing `expires_at` field. This issue primarily impacts users with `can_create_storage_volumes` permission, as they can exploit this flaw to disrupt service. Organizations utilizing versions prior to 7.1.0 should prioritize updating to the patched version to mitigate potential service interruptions.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
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.