CVE-2026-40195
published 2026-05-06CVE-2026-40195: Incus is a system container and virtual machine manager. In versions before 7.0.0, missing validation logic in the storage bucket import logic allows an…
PriorityP335medium6.5CVSS 3.1
AVNACLPRLUINSUCNINAH
EPSS
0.40%
32.1th percentile
Incus is a system container and virtual machine manager. In versions before 7.0.0, missing validation logic in the storage bucket import logic allows an authenticated user with access to the storage bucket feature to cause the Incus daemon to crash. The vulnerability is present in the backup metadata handling logic, where the daemon processes the index.yaml file from an imported archive and accesses members of the parsed backup configuration without first verifying that the configuration object was initialized. A malicious or malformed index.yaml that omits the config block causes a nil-pointer dereference during bucket import operations and terminates the daemon. 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.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| github.com | lxc_incus_v6_cmd_incusd | >= 0 < 7.0.0 | 7.0.0 |
| linuxcontainers | incus | < 7.0.0 | 7.0.0 |
| lxc | incus | < 7.0.0 | 7.0.0 |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv4.07.1HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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
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Bugzilla
CVE-2026-40195 incus: Incus: Denial of Service via malformed backup metadata import [fedora-all]
bugzilla·2026-05-12·CVSS 7.1
CVE-2026-40195 [HIGH] CVE-2026-40195 incus: Incus: Denial of Service via malformed backup metadata import [fedora-all]
CVE-2026-40195 incus: Incus: Denial of Service via malformed backup metadata import [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Bugzilla
CVE-2026-40195 incus: Incus: Denial of Service via malformed backup metadata import
bugzilla·2026-05-06·CVSS 7.1
CVE-2026-40195 [HIGH] CVE-2026-40195 incus: Incus: Denial of Service via malformed backup metadata import
CVE-2026-40195 incus: Incus: Denial of Service via malformed backup metadata import
Incus is a system container and virtual machine manager. In versions before 7.0.0, missing validation logic in the storage bucket import logic allows an authenticated user with access to the storage bucket feature to cause the Incus daemon to crash. The vulnerability is present in the backup metadata handling logic, where the daemon processes the index.yaml file from an imported archive and accesses members of the parsed backup configuration without first verifying that the configuration object was initialized. A malicious or malformed index.yaml that omits the config block causes a nil-pointer dereference during bucket import operations and terminates the daemon. Repeated use of this issue can be used to
2026-05-06
Published