Packages
- docker.io-app - Linux container runtime
Details
It was discovered that BuildKit, contained within Docker, incorrectly
handled file path validation when processing frontend API messages. An
attacker could possibly use this issue to write files outside of the
intended state directory. (CVE-2026-33747)
It was discovered that BuildKit, contained within Docker, incorrectly
validated the subdir component of Git URL fragments. An attacker could
possibly use this issue to access files outside of the checked-out
repository root. (CVE-2026-33748)
It was discovered that BuildKit, contained within Docker, incorrectly
handled file path validation when processing frontend API messages. An
attacker could possibly use this issue to write files outside of the
intended state directory. (CVE-2026-33747)
It was discovered that BuildKit, contained within Docker, incorrectly
validated the subdir component of Git URL fragments. An attacker could
possibly use this issue to access files outside of the checked-out
repository root. (CVE-2026-33748)
Update instructions
After a standard system update you need to restart Docker to make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 26.04 LTS resolute | docker.io – 29.1.3-0ubuntu4.1 | ||
| 24.04 LTS noble | docker.io – 29.1.3-0ubuntu3~24.04.2 | ||
| 22.04 LTS jammy | docker.io – 29.1.3-0ubuntu3~22.04.2 | ||
| 20.04 LTS focal | docker.io – 26.1.3-0ubuntu1~20.04.1+esm2 | ||
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