# ALSA-2026:66403: Security update for 3 packages

ALSA-2026:66403, released September 10, 2026, fixes 1 CVE across 3 products. None of them is reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/fix/linux/alsa-2026-66403
- Platform: Linux
- Released: Sep 10, 2026
- Priority: Routine (Closes CVE-2026-56392)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://osv.dev/vulnerability/ALSA-2026:66403

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [coreutils](https://patchblox.com/security/data/product/linux/coreutils.md) | almalinux 9 | 8.32-41.el9_8.1 |
| [coreutils-common](https://patchblox.com/security/data/product/linux/coreutils-common.md) | almalinux 9 | 8.32-41.el9_8.1 |
| [coreutils-single](https://patchblox.com/security/data/product/linux/coreutils-single.md) | almalinux 9 | 8.32-41.el9_8.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-56392](https://patchblox.com/security/data/cve/CVE-2026-56392.md) | Routine | Heap-based Buffer Overflow in GNU coreutils | 6.1 | 0.0019 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo