Incus: Unbounded binary import disk exhaustion
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-770.
Summary
Incus is a system container and virtual machine manager. Prior to version 7.0.0, uploads of large amount of data by authenticated users can run the Incus server out of disk space, potentially taking down the host system. The impact here is limited for anyone using storage.images_volume and storage.backups_volume as those users will have large uploads be stored on those volumes rather than directly on the host filesystem. This is the default behavior on IncusOS. This issue has been patched in version 7.0.0.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| lxc | incus | before 7.0.0 | 7.0.0 | Patch available | CNA |
| — | github.com/lxc/incus/v6/cmd/incusd (Go) | up to 6.23.0 | — | No fix listed | GHSA-98vh-x9cx-9cfp |
- incus Vendorlxc Affected before 7.0.0 Fixed in 7.0.0 Patch available CNA
- github.com/lxc/incus/v6/cmd/incusd (Go) Vendor— Affected up to 6.23.0 Fixed in — No fix listed GHSA-98vh-x9cx-9cfp
Remediation
- Fix · CNA incus (lxc) Fixed in 7.0.0
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2026-41685
- 2026-10-03 Alias added: GHSA-98vh-x9cx-9cfp
References
More lxc Incus vulnerabilities
- TI-2026-19296 Incus container image templating arbitrary host file read and write CVSS 3.1HIGH 8.7
- TI-2026-19295 Incus container environment configuration newline injection CVSS 3.1HIGH 8.7
- TI-2025-39899 Incus vulnerable to local privilege escalation through custom storage volumes CVSS 4.0HIGH 8.6
- TI-2026-29045 Incus out-of-bounds panic in snapshot metadata handling allows denial of service CVSS 4.0HIGH 7.1
- TI-2026-29009 Incus nil-pointer dereference in storage bucket import allows denial of service CVSS 4.0HIGH 7.1
- TI-2026-26122 Incus vulnerable to denial of source through crafted bucket backup file CVSS 3.1MEDIUM 6.5
Sources
- CVE-2026-41685 · CVE Program
- CVE-2026-41685 · NVD
- FIRST EPSS
- GHSA-98vh-x9cx-9cfp · GitHub Advisory Database · CC BY 4.0
- CVE-2026-41685 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences