# RHSA-2026:0453: kernel security update

RHSA-2026:0453, released December 16, 2025, fixes 3 CVEs in kernel (version 6.12.0-124.27.1.el10_1). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-0453
- Platform: Linux
- Released: Dec 16, 2025
- Priority: High (Closes CVE-2025-68287, high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:0453

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [kernel](https://patchblox.com/security/data/product/linux/kernel.md) | RHEL 10 | 6.12.0-124.27.1.el10_1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-68287](https://patchblox.com/security/data/cve/CVE-2025-68287.md) | High | usb: dwc3: Fix race condition between concurrent dwc3_remove_requests() call paths | 7.8 | 0.0023 |  |
| [CVE-2025-39840](https://patchblox.com/security/data/cve/CVE-2025-39840.md) | High | libperf: The kernel packages contain the Linux kernel, the core of any Linux operating system.  Security Fix(es):  * kernel: H... | 7.8 | 0.0015 |  |
| [CVE-2025-39905](https://patchblox.com/security/data/cve/CVE-2025-39905.md) | High | net: phylink: add lock for serializing concurrent pl->phydev writes with resolver | 7.8 | 0.0011 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo