incus — security advisory
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.
- Products
- incus
- Affected versions
- 6.0.4-2, 6.0.4-2+deb13u1, 6.0.4-2+deb13u1~bpo12+1, 6.0.4-2+deb13u2, 6.0.4-2+deb13u2~bpo12+1, 6.0.4-2+deb13u3, 6.0.4-2+deb13u3~bpo12+1, 6.0.4-2+deb13u4, 6.0.4-2+deb13u4~bpo12+1, 6.0.4-2+deb13u5, 6.0.4-2+deb13u5~bpo12+1, 6.0.4-2+deb13u6, 6.0.4-2+deb13u6~bpo12+1, 6.0.4-2+deb13u7, 6.0.4-2+deb13u7~bpo12+1, 6.0.4-3, 6.0.5-1, 6.0.5-2, 6.0.5-3, 6.0.5-4, 6.0.5-5, 6.0.5-6, 6.0.5-7, 6.0.5-8, 6.0.6-1, 6.0.6-2, 6.0.6-3, 6.14.0-1~exp1, 6.15.0-1~exp1, 6.16.0-1~exp1, 6.17.0-1~exp1, 6.20.0-1~exp1, 6.21.0-1~exp1, 6.22.0-1~exp1, 6.23.0-1~exp1, 7.0.0-1, 7.0.0-1~bpo13+1, 7.0.0-2~bpo13+1
- Fixed versions
- 6.0.4-2+deb13u8, 7.0.0-2
- CVEs
- CVE-2026-48756
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 19:59 UTC · Revision 1
Source evidence
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.
osv:DEBIAN-CVE-2026-48756
incus
Fixed versions: 6.0.4-2+deb13u8
incus
Fixed versions: 7.0.0-2
Complete source record
{
"id": "21ee628e4764e6cd8959ca89acd86fa1bf0c51d24e2da6eda7476a09d632b939",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-48756",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-48756",
"summary": "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.",
"evidence": "osv:DEBIAN-CVE-2026-48756",
"products": [
{
"name": {
"value": "incus",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "6.0.4-2+deb13u8",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "6.0.4-2",
"evidence": "/affected/0/versions"
},
{
"value": "6.0.4-2+deb13u1",
"evidence": "/affected/0/versions"
},
{
"value": "6.0.4-2+deb13u1~bpo12+1",
"evidence": "/affected/0/versions"
},
{
"value": "6.0.4-2+deb13u2",
"evidence": "/affected/0/versions"
},
{
"value": "6.0.4-2+deb13u2~bpo12+1",
"evidence": "/affected/0/versions"
},
{
"value": "6.0.4-2+deb13u3",
"evidence": "/affected/0/versions"
},
{
"value": "6.0.4-2+deb13u3~bpo12+1",
"evidence": "/affected/0/versions"
},
{
"value": "6.0.4-2+deb13u4",
"evidence": "/affected/0/versions"
},
{
"value": "6.0.4-2+deb13u4~bpo12+1",
"evidence": "/affected/0/versions"
},
{
"value": "6.0.4-2+deb13u5",
"evidence": "/affected/0/versions"
},
{
"value": "6.0.4-2+deb13u5~bpo12+1",
"evidence": "/affected/0/versions"
},
{
"value": "6.0.4-2+deb13u6",
"evidence": "/affected/0/versions"
},
{
"value": "6.0.4-2+deb13u6~bpo12+1",
"evidence": "/affected/0/versions"
},
{
"value": "6.0.4-2+deb13u7",
"evidence": "/affected/0/versions"
},
{
"value": "6.0.4-2+deb13u7~bpo12+1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "incus",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "7.0.0-2",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "6.0.4-2",
"evidence": "/affected/1/versions"
},
{
"value": "6.0.4-3",
"evidence": "/affected/1/versions"
},
{
"value": "6.0.5-1",
"evidence": "/affected/1/versions"
},
{
"value": "6.0.5-2",
"evidence": "/affected/1/versions"
},
{
"value": "6.0.5-3",
"evidence": "/affected/1/versions"
},
{
"value": "6.0.5-4",
"evidence": "/affected/1/versions"
},
{
"value": "6.0.5-5",
"evidence": "/affected/1/versions"
},
{
"value": "6.0.5-6",
"evidence": "/affected/1/versions"
},
{
"value": "6.0.5-7",
"evidence": "/affected/1/versions"
},
{
"value": "6.0.5-8",
"evidence": "/affected/1/versions"
},
{
"value": "6.0.6-1",
"evidence": "/affected/1/versions"
},
{
"value": "6.0.6-2",
"evidence": "/affected/1/versions"
},
{
"value": "6.0.6-3",
"evidence": "/affected/1/versions"
},
{
"value": "6.14.0-1~exp1",
"evidence": "/affected/1/versions"
},
{
"value": "6.15.0-1~exp1",
"evidence": "/affected/1/versions"
},
{
"value": "6.16.0-1~exp1",
"evidence": "/affected/1/versions"
},
{
"value": "6.17.0-1~exp1",
"evidence": "/affected/1/versions"
},
{
"value": "6.20.0-1~exp1",
"evidence": "/affected/1/versions"
},
{
"value": "6.21.0-1~exp1",
"evidence": "/affected/1/versions"
},
{
"value": "6.22.0-1~exp1",
"evidence": "/affected/1/versions"
},
{
"value": "6.23.0-1~exp1",
"evidence": "/affected/1/versions"
},
{
"value": "7.0.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "7.0.0-1~bpo13+1",
"evidence": "/affected/1/versions"
},
{
"value": "7.0.0-2~bpo13+1",
"evidence": "/affected/1/versions"
}
]
}
],
"severity": "low",
"structured": {
"id": "DEBIAN-CVE-2026-48756",
"aliases": [
"DEBIAN-CVE-2026-48756"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "6.0.4-2+deb13u8"
}
]
}
],
"package": {
"name": "incus",
"purl": "pkg:deb/debian/incus?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"6.0.4-2",
"6.0.4-2+deb13u1",
"6.0.4-2+deb13u1~bpo12+1",
"6.0.4-2+deb13u2",
"6.0.4-2+deb13u2~bpo12+1",
"6.0.4-2+deb13u3",
"6.0.4-2+deb13u3~bpo12+1",
"6.0.4-2+deb13u4",
"6.0.4-2+deb13u4~bpo12+1",
"6.0.4-2+deb13u5",
"6.0.4-2+deb13u5~bpo12+1",
"6.0.4-2+deb13u6",
"6.0.4-2+deb13u6~bpo12+1",
"6.0.4-2+deb13u7",
"6.0.4-2+deb13u7~bpo12+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48756.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.0.0-2"
}
]
}
],
"package": {
"name": "incus",
"purl": "pkg:deb/debian/incus?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"6.0.4-2",
"6.0.4-3",
"6.0.5-1",
"6.0.5-2",
"6.0.5-3",
"6.0.5-4",
"6.0.5-5",
"6.0.5-6",
"6.0.5-7",
"6.0.5-8",
"6.0.6-1",
"6.0.6-2",
"6.0.6-3",
"6.14.0-1~exp1",
"6.15.0-1~exp1",
"6.16.0-1~exp1",
"6.17.0-1~exp1",
"6.20.0-1~exp1",
"6.21.0-1~exp1",
"6.22.0-1~exp1",
"6.23.0-1~exp1",
"7.0.0-1",
"7.0.0-1~bpo13+1",
"7.0.0-2~bpo13+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48756.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-16T09:47:32.542370883Z",
"provider": "osv",
"upstream": [
"CVE-2026-48756"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-48756"
]
},
"related_cves": [
{
"value": "CVE-2026-48756",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 338633,
"published_at": "2026-08-21T15:16:41.21+00:00"
}