SB20260803101 - Fedora 45 update for docker-buildkit
Published: August 3, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Resource exhaustion (CVE-ID: CVE-2026-47262)
CWE-ID: CWE-400 - Resource exhaustion
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in group parsing when creating a container from a maliciously crafted image. A remote user can supply a specially crafted image to cause a denial of service.
Successful exploitation can exhaust memory and trigger an out-of-memory kill of the containerd process, making the runtime API unavailable.
2) Incorrect authorization (CVE-ID: CVE-2026-53492)
CWE-ID: CWE-863 - Incorrect Authorization
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to bypass device allocation controls and inject arbitrary CDI configuration into a restored container.
The vulnerability exists due to improper input validation and incorrect authorization in containerd CRI checkpoint restore handling when restoring a container from an untrusted checkpoint image. A remote user can create a pod and restore it from a crafted checkpoint image to bypass device plugin enforcement and inject arbitrary CDI edits into the restored container.
Only nodes with CDI enabled and a matching host CDI specification for the requested device are vulnerable.
Remediation
Install update from vendor's website.