# RHSA-2026:61887: kernel security update

RHSA-2026:61887, released September 2, 2026, fixes 23 CVEs in kernel (version 6.12.0-211.50.1.el10_2). None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-61887
- Platform: Linux
- Released: Sep 2, 2026
- Priority: Urgent (Closes CVE-2026-72069, rated Critical)
- CVEs: 23, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:61887

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [kernel](https://patchblox.com/security/data/product/linux/kernel.md) | RHEL 10 | 6.12.0-211.50.1.el10_2 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-72069](https://patchblox.com/security/data/cve/CVE-2026-72069.md) | Urgent | linux: In the Linux kernel, the following vulnerability has been resolved:  locking/rt: Fix the incorrect RCU protection in... | 9.8 | 0.0073 |  |
| [CVE-2026-63800](https://patchblox.com/security/data/cve/CVE-2026-63800.md) | Urgent | pNFS: Fix use-after-free in pnfs_update_layout() | 9.8 | 0.0064 |  |
| [CVE-2026-53053](https://patchblox.com/security/data/cve/CVE-2026-53053.md) | Urgent | iommu/amd: Fix clone_alias() to use the original device's devid | 9.8 | 0.0013 |  |
| [CVE-2026-64320](https://patchblox.com/security/data/cve/CVE-2026-64320.md) | High | nvmet: fix pre-auth out-of-bounds heap read in Discovery Get Log Page | 9.1 | 0.0080 |  |
| [CVE-2026-53399](https://patchblox.com/security/data/cve/CVE-2026-53399.md) | High | nfsd: release layout stid on setlease failure | 9.8 | 0.0066 |  |
| [CVE-2026-23003](https://patchblox.com/security/data/cve/CVE-2026-23003.md) | High | kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system.  Security Fix(es):  * kernel: k... | 8.8 | 0.0055 |  |
| [CVE-2026-53392](https://patchblox.com/security/data/cve/CVE-2026-53392.md) | High | NFSv4/flexfiles: reject zero filehandle version count | 8.8 | 0.0053 |  |
| [CVE-2026-53397](https://patchblox.com/security/data/cve/CVE-2026-53397.md) | High | nfsd: fix posix_acl leak on SETACL decode failure | 8.8 | 0.0053 |  |
| [CVE-2026-53391](https://patchblox.com/security/data/cve/CVE-2026-53391.md) | High | NFSv4/pNFS: reject zero-length r_addr in nfs4_decode_mp_ds_addr | 8.8 | 0.0052 |  |
| [CVE-2026-64384](https://patchblox.com/security/data/cve/CVE-2026-64384.md) | High | smb: client: fix change notify replay double-free | 9.8 | 0.0046 |  |
| [CVE-2026-53026](https://patchblox.com/security/data/cve/CVE-2026-53026.md) | High | kernel: In the Linux kernel, the following vulnerability has been resolved: NFSD: fix nfs4_file access extra count in nfsd4_a... | 8.8 | 0.0043 |  |
| [CVE-2026-64136](https://patchblox.com/security/data/cve/CVE-2026-64136.md) | High | kernel: In the Linux kernel, the following vulnerability has been resolved: smb: client: protect tc_count increment in smb2_f... | 9.8 | 0.0041 |  |
| [CVE-2025-21834](https://patchblox.com/security/data/cve/CVE-2025-21834.md) | High | kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system | 8.8 | 0.0018 |  |
| [CVE-2026-64276](https://patchblox.com/security/data/cve/CVE-2026-64276.md) | High | Input: synaptics-rmi4 - bound the F30 keymap to the GPIO/LED count | 8.8 | 0.0017 |  |
| [CVE-2026-64277](https://patchblox.com/security/data/cve/CVE-2026-64277.md) | High | Input: synaptics-rmi4 - bound the F3A keymap to the GPIO count | 8.8 | 0.0017 |  |
| [CVE-2026-64298](https://patchblox.com/security/data/cve/CVE-2026-64298.md) | High | NFSv4: include MAY_WRITE in open permission mask for O_TRUNC | 8.8 | 0.0015 |  |
| [CVE-2026-64018](https://patchblox.com/security/data/cve/CVE-2026-64018.md) | High | kernel: In the Linux kernel, the following vulnerability has been resolved: net: mana: validate rx_req_idx to prevent out-of-... | 9.3 | 0.0014 |  |
| [CVE-2026-53189](https://patchblox.com/security/data/cve/CVE-2026-53189.md) | High | bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system.  Security Fix(es):  * kernel: n... | 8.8 | 0.0013 |  |
| [CVE-2026-45970](https://patchblox.com/security/data/cve/CVE-2026-45970.md) | High | kernel-rt-devel: The kernel packages contain the Linux kernel, the core of any Linux operating system | 8.8 | 0.0013 |  |
| [CVE-2026-64189](https://patchblox.com/security/data/cve/CVE-2026-64189.md) | High | netfilter: ipset: fix race between dump and ip_set_list resize | 8.8 | 0.0013 |  |
| [CVE-2026-43454](https://patchblox.com/security/data/cve/CVE-2026-43454.md) | High | kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system | 8.8 | 0.0012 |  |
| [CVE-2026-53153](https://patchblox.com/security/data/cve/CVE-2026-53153.md) | High | kernel-rt-64k: The kernel packages contain the Linux kernel, the core of any Linux operating system | 8.8 | 0.0010 |  |
| [CVE-2026-64418](https://patchblox.com/security/data/cve/CVE-2026-64418.md) | High | linux: In the Linux kernel, the following vulnerability has been resolved:  mm: shrinker: fix shrinker_info teardown race wi... | 8.8 | 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