# RXSA-2026:25121: kernel security update

RXSA-2026:25121, released June 15, 2026, fixes 13 CVEs in kernel (version 0:4.18.0-553.132.1.el8_10.cloud.0.1). None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/rxsa-2026-25121
- Platform: Linux
- Released: Jun 15, 2026
- Priority: Urgent (Closes CVE-2025-68366, rated Critical)
- CVEs: 13, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://errata.rockylinux.org/RXSA-2026:25121

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [kernel](https://patchblox.com/security/data/product/linux/kernel.md) | rocky 8 | 0:4.18.0-553.132.1.el8_10.cloud.0.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-68366](https://patchblox.com/security/data/cve/CVE-2025-68366.md) | Urgent | linux: In the Linux kernel, the following vulnerability has been resolved:  nbd: defer config unlock in nbd_genl_connect  Th... | 8.8 | 0.0020 |  |
| [CVE-2026-43037](https://patchblox.com/security/data/cve/CVE-2026-43037.md) | High | ip6_tunnel: clear skb2->cb[] in ip4ip6_err() | 9.8 | 0.0069 |  |
| [CVE-2026-43125](https://patchblox.com/security/data/cve/CVE-2026-43125.md) | High | dlm: validate length in dlm_search_rsb_tree | 9.8 | 0.0054 |  |
| [CVE-2026-22984](https://patchblox.com/security/data/cve/CVE-2026-22984.md) | High | kernel: In the Linux kernel, the following vulnerability has been resolved: libceph: prevent potential out-of-bounds reads in... | 8.8 | 0.0041 |  |
| [CVE-2026-22990](https://patchblox.com/security/data/cve/CVE-2026-22990.md) | High | kernel: In the Linux kernel, the following vulnerability has been resolved: libceph: replace overzealous BUG_ON in osdmap_app... | 8.8 | 0.0040 |  |
| [CVE-2026-31613](https://patchblox.com/security/data/cve/CVE-2026-31613.md) | High | smb: client: fix OOB reads parsing symlink error response | 8.8 | 0.0039 |  |
| [CVE-2026-43038](https://patchblox.com/security/data/cve/CVE-2026-43038.md) | High | kpatch-patch-4_18_0-553_109_1: This is a kernel live patch module which can be loaded by the kpatch command line utility to modify the code of a run... | 9.8 | 0.0026 |  |
| [CVE-2025-21858](https://patchblox.com/security/data/cve/CVE-2025-21858.md) | High | kernel-64kb: The SUSE Linux Enterprise 15 SP7 kernel was updated to receive various security bugfixes.   The following security bu... | 8.8 | 0.0025 |  |
| [CVE-2026-45852](https://patchblox.com/security/data/cve/CVE-2026-45852.md) | High | kernel-uek-modules: [5.15.0-323.211.3.3] - Revert 'x86/alternatives: Add alt_instr.flags' (Harshit Mogalapalli)  [Orabug: 39853924]  [5.1... | 8.8 | 0.0020 |  |
| [CVE-2026-23392](https://patchblox.com/security/data/cve/CVE-2026-23392.md) | High | netfilter: nf_tables: release flowtable after rcu grace period on error | 8.8 | 0.0017 |  |
| [CVE-2023-53781](https://patchblox.com/security/data/cve/CVE-2023-53781.md) | High | linux: In the Linux kernel, the following vulnerability has been resolved:  smc: Fix use-after-free in tcp_write_timer_handl... | 8.8 | 0.0015 |  |
| [CVE-2026-46181](https://patchblox.com/security/data/cve/CVE-2026-46181.md) | High | RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event() | 8.8 | 0.0014 |  |
| [CVE-2026-31581](https://patchblox.com/security/data/cve/CVE-2026-31581.md) | High | ALSA: 6fire: fix use-after-free on disconnect | 8.8 | 0.0013 |  |

---

Data as of 2026-11-07T18:46:35Z 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

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.