# RHSA-2026:61351: kernel security update

RHSA-2026:61351, released June 24, 2026, fixes 3 CVEs in kernel (version 6.12.0-55.99.1.el10_0). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-61351
- Platform: Linux
- Released: Jun 24, 2026
- Priority: High (Closes CVE-2026-74580, high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:61351

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [kernel](https://patchblox.com/security/data/product/linux/kernel.md) | RHEL 10 | 6.12.0-55.99.1.el10_0 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-74580](https://patchblox.com/security/data/cve/CVE-2026-74580.md) | High | vhost: reset the vring metadata cache on vring reconfiguration | 8.8 | 0.0041 |  |
| [CVE-2026-46209](https://patchblox.com/security/data/cve/CVE-2026-46209.md) | High | kernel-uek-core: [5.15.0-323.211.3.3] - Revert 'x86/alternatives: Add alt_instr.flags' (Harshit Mogalapalli)  [Orabug: 39853924]  [5.1... | 8.4 | 0.0014 |  |
| [CVE-2026-43023](https://patchblox.com/security/data/cve/CVE-2026-43023.md) | High | kernel: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: fix race conditions in sco_sock_c... | 7.8 | 0.0010 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo