# RHSA-2026:15978: Security update for 2 packages

RHSA-2026:15978, released May 15, 2026, fixes 1 CVE across 2 products. One of them is being exploited (CVE-2026-31431); 1 on CISA KEV. Patch Radar priority: Patch now.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-15978
- Platform: Linux
- Released: May 15, 2026
- Priority: Patch now (Closes CVE-2026-31431, exploited (CISA KEV))
- CVEs: 1, exploited: 1, on CISA KEV: 1
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:15978

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [kpatch-patch-5_14_0-611_36_1](https://patchblox.com/security/data/product/linux/kpatch-patch-5-14-0-611-36-1.md) | RHEL 9 | 0:1-1.el9_7 |
| [kpatch-patch-5_14_0-611_9_1](https://patchblox.com/security/data/product/linux/kpatch-patch-5-14-0-611-9-1.md) | RHEL 9 | 0:1-4.el9_7 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-31431](https://patchblox.com/security/data/cve/CVE-2026-31431.md) | Patch now | crypto: algif_aead - Revert to operating out-of-place | 8.1 | 0.9811 | CISA KEV |

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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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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