# RHSA-2026:4111: kernel security update

RHSA-2026:4111, released November 12, 2025, fixes 6 CVEs in kernel (version 6.12.0-55.63.1.el10_0). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-4111
- Platform: Linux
- Released: Nov 12, 2025
- Priority: High (Closes CVE-2025-40168, high severity)
- CVEs: 6, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:4111

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [kernel](https://patchblox.com/security/data/product/linux/kernel.md) | RHEL 10 | 6.12.0-55.63.1.el10_0 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-40168](https://patchblox.com/security/data/cve/CVE-2025-40168.md) | High | smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match(). | 8.1 | 0.0042 |  |
| [CVE-2025-38129](https://patchblox.com/security/data/cve/CVE-2025-38129.md) | High | page_pool: Fix use-after-free in page_pool_recycle_in_ring | 7.8 | 0.0020 |  |
| [CVE-2025-38289](https://patchblox.com/security/data/cve/CVE-2025-38289.md) | High | kernel-64kb: The SUSE Linux Enterprise 15 SP7 kernel was updated to receive various security bugfixes.  The following security bug... | 7.8 | 0.0019 |  |
| [CVE-2025-38349](https://patchblox.com/security/data/cve/CVE-2025-38349.md) | High | eventpoll: don't decrement ep refcount while still holding the ep mutex | 8.4 | 0.0018 |  |
| [CVE-2025-38703](https://patchblox.com/security/data/cve/CVE-2025-38703.md) | High | drm/xe: Make dma-fences compliant with the safe access rules | 7.8 | 0.0018 |  |
| [CVE-2025-40064](https://patchblox.com/security/data/cve/CVE-2025-40064.md) | High | smc: Fix use-after-free in __pnet_find_base_ndev(). | 8.8 | 0.0015 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo