# RHSA-2026:0747: kernel security update

RHSA-2026:0747, released December 16, 2025, fixes 4 CVEs in kernel (version 6.12.0-55.54.1.el10_0). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-0747
- Platform: Linux
- Released: Dec 16, 2025
- Priority: High (Closes CVE-2025-68285, high severity)
- CVEs: 4, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:0747

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [kernel](https://patchblox.com/security/data/product/linux/kernel.md) | RHEL 10 | 6.12.0-55.54.1.el10_0 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-68285](https://patchblox.com/security/data/cve/CVE-2025-68285.md) | High | libceph: fix potential use-after-free in have_mon_and_osd_map() | 9.8 | 0.0059 |  |
| [CVE-2025-40176](https://patchblox.com/security/data/cve/CVE-2025-40176.md) | High | tls: wait for pending async decryptions if tls_strp_msg_hold fails | 9.8 | 0.0049 |  |
| [CVE-2025-40141](https://patchblox.com/security/data/cve/CVE-2025-40141.md) | High | linux: In the Linux kernel, the following vulnerability has been resolved:  Bluetooth: ISO: Fix possible UAF on iso_conn_fre... | 8.0 | 0.0032 |  |
| [CVE-2025-37869](https://patchblox.com/security/data/cve/CVE-2025-37869.md) | High | kernel: In the Linux kernel, the following vulnerability has been resolved: drm/xe: Use local fence in error path of xe_migra... | 7.8 | 0.0028 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo