DEBIAN-CVE-2026-40243
Incus is a system container and virtual machine manager. In versions before 7.0.0, broken TLS validation logic in the OVN database connection logic can allow connections to an attacker's OVN database. The OVN client implementations disable Go standard TLS server verification and replace it with custom peer-certificate verification logic. That replacement verifier does not anchor trust in the configured CA certificate. Instead, it constructs the verification root set from certificates supplied by the peer during the handshake, so the configured CA is parsed but not used as the trust anchor for the final verification decision. In OVN-enabled deployments that use these SSL database connection paths, an attacker able to impersonate or intercept the OVN endpoint on the management network can present a rogue self-signed certificate chain, and Incus will accept this certificate as valid. This issue defeats the intended CA-based trust model for OVN database connections and permits endpoint impersonation by an active attacker in a suitable network position. This issue is fixed in version 7.0.0.
DEBIAN-CVE-2026-40243
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-40243
incus
Source reference: /affected/0/package/name
- Affected versions
- 6.0.4-2
Source reference:
/affected/0/versions6.0.4-2+deb13u1Source reference:
/affected/0/versions6.0.4-2+deb13u1~bpo12+1Source reference:
/affected/0/versions6.0.4-2+deb13u2Source reference:
/affected/0/versions6.0.4-2+deb13u2~bpo12+1Source reference:
/affected/0/versions6.0.4-2+deb13u3Source reference:
/affected/0/versions6.0.4-2+deb13u3~bpo12+1Source reference:
/affected/0/versions6.0.4-2+deb13u4Source reference:
/affected/0/versions6.0.4-2+deb13u4~bpo12+1Source reference:
/affected/0/versions6.0.4-2+deb13u5Source reference:
/affected/0/versions6.0.4-2+deb13u5~bpo12+1Source reference:
/affected/0/versions6.0.4-2+deb13u6Source reference:
/affected/0/versions6.0.4-2+deb13u6~bpo12+1Source reference:
/affected/0/versions6.0.4-2+deb13u7~bpo12+1Source reference:
/affected/0/versions - Fixed versions
- 6.0.4-2+deb13u7
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
incus
Source reference: /affected/1/package/name
- Affected versions
- 6.0.4-2
Source reference:
/affected/1/versions6.0.4-3Source reference:
/affected/1/versions6.0.5-1Source reference:
/affected/1/versions6.0.5-2Source reference:
/affected/1/versions6.0.5-3Source reference:
/affected/1/versions6.0.5-4Source reference:
/affected/1/versions6.0.5-5Source reference:
/affected/1/versions6.0.5-6Source reference:
/affected/1/versions6.0.5-7Source reference:
/affected/1/versions6.0.5-8Source reference:
/affected/1/versions6.0.6-1Source reference:
/affected/1/versions6.0.6-2Source reference:
/affected/1/versions6.0.6-3Source reference:
/affected/1/versions6.14.0-1~exp1Source reference:
/affected/1/versions6.15.0-1~exp1Source reference:
/affected/1/versions6.16.0-1~exp1Source reference:
/affected/1/versions6.17.0-1~exp1Source reference:
/affected/1/versions6.20.0-1~exp1Source reference:
/affected/1/versions6.21.0-1~exp1Source reference:
/affected/1/versions6.22.0-1~exp1Source reference:
/affected/1/versions6.23.0-1~exp1Source reference:
/affected/1/versions7.0.0-1~bpo13+1Source reference:
/affected/1/versions - Fixed versions
- 7.0.0-1
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "6.0.4-2+deb13u7"
}
]
}
],
"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~bpo12+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40243.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.0.0-1"
}
]
}
],
"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~bpo13+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40243.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56874 · Revision 1
- Added to Heist Feed
- Publisher date