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TI-2025-39899 Aliases CVE-2025-64507GHSA-56mx-8g9f-5crf

Incus vulnerable to local privilege escalation through custom storage volumes

Priority HIGH 72CWE-269Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-269.

Summary

Incus is a system container and virtual machine manager. An issue in versions prior to 6.0.6 and 6.19.0 affects any Incus user in an environment where an unprivileged user may have root access to a container with an attached custom storage volume that has the `security.shifted` property set to `true` as well as access to the host as an unprivileged user. The most common case for this would be systems using `incus-user` with the less privileged `incus` group to provide unprivileged users with an isolated restricted access to Incus. Such users may be able to create a custom storage volume with the necessary property (depending on kernel and filesystem support) and can then write a setuid binary from within the container which can be executed as an unprivileged user on the host to gain root privileges. A patch for this issue is expected in versions 6.0.6 and 6.19.0. As a workaround, permissions can be manually restricted until a patched version of Incus is deployed.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00178 7th percentileScored 2026-11-07
Public exploit Yes 3 exploit referencesTagged by NVD
Fix Fixed incus (lxc): 6.0.6, 6.19.0github.com/lxc/incus/v6 (Go): 6.19.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
lxcincusbefore 6.0.6; 6.1.0 to before 6.19.06.0.6, 6.19.0Patch availableCNA
—github.com/lxc/incus/v6 (Go)before 6.19.06.19.0Patch availableGHSA-56mx-8g9f-5crf
  • incus Vendorlxc Affected before 6.0.6; 6.1.0 to before 6.19.0 Fixed in 6.0.6, 6.19.0 Patch available CNA
  • github.com/lxc/incus/v6 (Go) Vendor— Affected before 6.19.0 Fixed in 6.19.0 Patch available GHSA-56mx-8g9f-5crf

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:linuxcontainers:incus:*:*:*:*:*:*:*:*before 6.0.6; 6.1.0 to before 6.19.0Vulnerablelxc
  • cpe:2.3:a:linuxcontainers:incus:*:*:*:*:*:*:*:* Versions before 6.0.6; 6.1.0 to before 6.19.0 Vulnerable ·lxc

Remediation

  • Fix · CNA incus (lxc) Fixed in 6.0.6, 6.19.0
  • Fix · GHSA-56mx-8g9f-5crf github.com/lxc/incus/v6 (Go) Fixed in 6.19.0 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-64507
  2. 2026-10-03 Alias added: GHSA-56mx-8g9f-5crf

References

Exploit 3

Advisory 1

Other 1

  • 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-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
  • TI-2026-25935 Incus does not verify combined fingerprint when downloading images from simplestreams servers CVSS 4.0MEDIUM 5.7
See all 17 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences