# RHSA-2026:47017: kernel security update

RHSA-2026:47017, released June 26, 2026, fixes 3 CVEs in kernel (version 6.12.0-211.40.1.el10_2). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-47017
- Platform: Linux
- Released: Jun 26, 2026
- Priority: High (Closes CVE-2026-31635, high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:47017

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [kernel](https://patchblox.com/security/data/product/linux/kernel.md) | RHEL 10 | 6.12.0-211.40.1.el10_2 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-31635](https://patchblox.com/security/data/cve/CVE-2026-31635.md) | High | kernel: In the Linux kernel, the following vulnerability has been resolved: rxrpc: fix oversized RESPONSE authenticator lengt... | 7.8 | 0.0102 |  |
| [CVE-2026-53281](https://patchblox.com/security/data/cve/CVE-2026-53281.md) | High | kernel: In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Avoid NULL pointer dereference or ref... | 8.8 | 0.0014 |  |
| [CVE-2026-46086](https://patchblox.com/security/data/cve/CVE-2026-46086.md) | High | net: bridge: use a stable FDB dst snapshot in RCU readers | 7.8 | 0.0013 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo