# RHSA-2026:4012: kernel security update

RHSA-2026:4012, released December 4, 2025, fixes 2 CVEs in kernel (version 6.12.0-124.43.1.el10_1). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-4012
- Platform: Linux
- Released: Dec 4, 2025
- Priority: High (Closes CVE-2025-40249, high severity)
- CVEs: 2, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:4012

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [kernel](https://patchblox.com/security/data/product/linux/kernel.md) | RHEL 10 | 6.12.0-124.43.1.el10_1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-40249](https://patchblox.com/security/data/cve/CVE-2025-40249.md) | High | linux: In the Linux kernel, the following vulnerability has been resolved:  gpio: cdev: make sure the cdev fd is still activ... | 7.8 | 0.0016 |  |
| [CVE-2025-39818](https://patchblox.com/security/data/cve/CVE-2025-39818.md) | High | kernel: In the Linux kernel, the following vulnerability has been resolved: HID: intel-thc-hid: intel-thc: Fix incorrect poin... | 7.8 | 0.0015 |  |

---

Data as of 2026-11-07T06:34:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo