# RHSA-2026:15976: Security update for 5 packages

RHSA-2026:15976, released May 15, 2026, fixes 1 CVE across 5 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-2026-15976
- 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-2026:15976

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [kpatch-patch-4_18_0-553_109_1](https://patchblox.com/security/data/product/linux/kpatch-patch-4-18-0-553-109-1.md) | RHEL 8 | 0:1-1.el8_10 |
| [kpatch-patch-4_18_0-553_40_1](https://patchblox.com/security/data/product/linux/kpatch-patch-4-18-0-553-40-1.md) | RHEL 8 | 0:1-10.el8_10 |
| [kpatch-patch-4_18_0-553_53_1](https://patchblox.com/security/data/product/linux/kpatch-patch-4-18-0-553-53-1.md) | RHEL 8 | 0:1-8.el8_10 |
| [kpatch-patch-4_18_0-553_72_1](https://patchblox.com/security/data/product/linux/kpatch-patch-4-18-0-553-72-1.md) | RHEL 8 | 0:1-5.el8_10 |
| [kpatch-patch-4_18_0-553_85_1](https://patchblox.com/security/data/product/linux/kpatch-patch-4-18-0-553-85-1.md) | RHEL 8 | 0:1-3.el8_10 |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo