A flaw was found in bootc and ostree. Already-staged deployments are finalized without revalidating the deployment's container image against the current containers signature policy. Unsigned OS content staged under a prior permissive policy can remain bootable after policy is hardened to reject unsigned images, leading to full host compromise on reboot.
Metrics
Affected Vendors & Products
References
History
Wed, 21 Oct 2026 17:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Bootc
Bootc bootc Redhat hardened Images Redhat openshift Container Platform |
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| Vendors & Products |
Bootc
Bootc bootc Redhat hardened Images Redhat openshift Container Platform |
Mon, 19 Oct 2026 18:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Mon, 19 Oct 2026 12:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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| Metrics |
threat_severity
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threat_severity
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Mon, 19 Oct 2026 07:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in bootc and ostree. Already-staged deployments are finalized without revalidating the deployment's container image against the current containers signature policy. Unsigned OS content staged under a prior permissive policy can remain bootable after policy is hardened to reject unsigned images, leading to full host compromise on reboot. | |
| Title | Bootc: ostree: bootc/ostree: staged deployments not revalidated against container signature policy before finalization | |
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat hummingbird Redhat openshift |
|
| Weaknesses | CWE-345 | |
| CPEs | cpe:/a:redhat:hummingbird:1 cpe:/a:redhat:openshift:4 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
|
| Vendors & Products |
Redhat
Redhat enterprise Linux Redhat hummingbird Redhat openshift |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: redhat
Published: 2026-10-19T06:40:50.466Z
Updated: 2026-10-21T18:56:55.605Z
Reserved: 2026-07-21T11:26:43.156Z
Link: CVE-2026-16460
Updated: 2026-10-19T17:30:18.847Z
Status : Awaiting Analysis
Published: 2026-10-19T07:16:31.253
Modified: 2026-10-21T19:17:02.333
Link: CVE-2026-16460