# RHSA-2026:29702: runc security update

RHSA-2026:29702, released June 29, 2026, fixes 3 CVEs in runc (version 4:1.4.2-2.el9_8). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-29702
- Platform: Linux
- Released: Jun 29, 2026
- Priority: High (Closes CVE-2026-25679, high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:29702

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [runc](https://patchblox.com/security/data/product/linux/runc.md) | RHEL 9 | 4:1.4.2-2.el9_8 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-25679](https://patchblox.com/security/data/cve/CVE-2026-25679.md) | High | Incorrect parsing of IPv6 host literals in net/url | 9.1 | 0.0083 |  |
| [CVE-2026-32280](https://patchblox.com/security/data/cve/CVE-2026-32280.md) | High | Unexpected work during chain building in crypto/x509 | 9.1 | 0.0063 |  |
| [CVE-2026-32281](https://patchblox.com/security/data/cve/CVE-2026-32281.md) | High | Inefficient policy validation in crypto/x509 | 9.1 | 0.0036 |  |

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Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo