RHSA-2026:98561: Important: crun security update

Q: Which deployments are exposed to this issue?

The issue affects rootful krun deployments that use passt. The affected runtime package is crun; related debuginfo and debugsource packages are also listed in the update.

Q: What level of access does an attacker need to exploit it?

The available information indicates that exploitation involves a container payload in a rootful krun configuration using passt. It does not specify the exact permissions or access required to supply or control that payload.

Q: What is the impact if exploitation succeeds?

A container payload can be executed as root on the host, resulting in host-root code execution.

Published Nov 11, 2026

Updated

crun is a OCI runtimeSecurity Fix(es): crun: crun: rootful krun with passt executes container payload as host root (CVE-2026-84042) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Affected Software

12 affected componentsFixes available

redhat/crun<1.30.1-1.el10_3

1.30.1-1.el10_3

redhat/crun<1.30.1-1.el10_3

1.30.1-1.el10_3

redhat/crun-debuginfo<1.30.1-1.el10_3

1.30.1-1.el10_3

redhat/crun-debugsource<1.30.1-1.el10_3

1.30.1-1.el10_3

redhat/crun-debuginfo<1.30.1-1.el10_3

1.30.1-1.el10_3

redhat/crun-debugsource<1.30.1-1.el10_3

1.30.1-1.el10_3

redhat/crun<1.30.1-1.el10_3

1.30.1-1.el10_3

redhat/crun-debuginfo<1.30.1-1.el10_3

1.30.1-1.el10_3

redhat/crun-debugsource<1.30.1-1.el10_3

1.30.1-1.el10_3

redhat/crun<1.30.1-1.el10_3.aa

1.30.1-1.el10_3.aa

redhat/crun-debuginfo<1.30.1-1.el10_3.aa

1.30.1-1.el10_3.aa

redhat/crun-debugsource<1.30.1-1.el10_3.aa

1.30.1-1.el10_3.aa

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade redhat/crun to a version that resolves this vulnerability.
Fixed in 1.30.1-1.el10_3
Upgrade
Upgrade redhat/crun-debuginfo to a version that resolves this vulnerability.
Fixed in 1.30.1-1.el10_3
Upgrade
Upgrade redhat/crun-debugsource to a version that resolves this vulnerability.
Fixed in 1.30.1-1.el10_3
Upgrade
Upgrade redhat/crun to a version that resolves this vulnerability.
Fixed in 1.30.1-1.el10_3.aa
Upgrade
Upgrade redhat/crun-debuginfo to a version that resolves this vulnerability.
Fixed in 1.30.1-1.el10_3.aa
Upgrade
Upgrade redhat/crun-debugsource to a version that resolves this vulnerability.
Fixed in 1.30.1-1.el10_3.aa

Event History

Nov 11, 2026

Advisory Published

via Red Hat·12:00 AM

Data Sourced

via Red Hat·12:00 AM

RemedyDescriptionAffected Software

Frequently Asked Questions

Which deployments are exposed to this issue?

The issue affects rootful krun deployments that use passt. The affected runtime package is crun; related debuginfo and debugsource packages are also listed in the update.

What level of access does an attacker need to exploit it?

The available information indicates that exploitation involves a container payload in a rootful krun configuration using passt. It does not specify the exact permissions or access required to supply or control that payload.

What is the impact if exploitation succeeds?

A container payload can be executed as root on the host, resulting in host-root code execution.

RHSA-2026:98561: Important: crun security update

Affected Software

Remediation

Event History

Frequently Asked Questions

Which deployments are exposed to this issue?

What level of access does an attacker need to exploit it?

What is the impact if exploitation succeeds?

Company

Resources

Contact

Frequently Asked Questions

Which deployments are exposed to this issue?

What level of access does an attacker need to exploit it?

What is the impact if exploitation succeeds?