CVE-2026-39834 Affecting podman package, versions <5.8.2-r5
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CHAINGUARDLATEST-PODMAN-16913791
- published28 May 2026
- disclosed22 May 2026
Introduced: 22 May 2026
NewCVE-2026-39834 (opens in a new tab)How to fix?
Upgrade Chainguard podman to version 5.8.2-r5 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream podman package and not the podman package as distributed by Chainguard.
See How to fix? for Chainguard relevant fixed versions and status.
When writing data larger than 4GB in a single Write call on an SSH channel, an integer overflow in the internal payload size calculation caused the write loop to spin indefinitely, sending empty packets without making progress. The size comparison now uses int64 to prevent truncation.