# CVE-2025-40009: kernel-64kb: Security update for the Linux Kernel

CVE-2025-40009 is fixed in 35 products on 1 platform, first by DEBIAN-CVE-2025-40009, released October 20, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-40009
- Priority: High
- CVSS: n/a (important)
- EPSS: 0.0024
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 20, 2025

## Description

Security update for the Linux Kernel

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bpftool6.12 amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | bpftool6.12-debuginfo amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | dtb-aarch64 opensuse-leap 16.0 | 6.12.0-160000.7.1 | [OPENSUSE-SU-2025:20091-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20091-1.md) | Nov 26, 2025 |
| Linux | kernel-64kb opensuse-leap 16.0 | 6.12.0-160000.7.1 | [OPENSUSE-SU-2025:20091-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20091-1.md) | Nov 26, 2025 |
| Linux | kernel-64kb sles 16.0 | 6.12.0-160000.7.1 | [SUSE-SU-2025:21147-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-21147-1.md) | Nov 26, 2025 |
| Linux | kernel-default opensuse-leap 16.0 | 6.12.0-160000.7.1 | [OPENSUSE-SU-2025:20091-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20091-1.md) | Nov 26, 2025 |
| Linux | kernel-default sles 16.0 | 6.12.0-160000.7.1 | [SUSE-SU-2025:21147-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-21147-1.md) | Nov 26, 2025 |
| Linux | kernel-default-base opensuse-leap 16.0 | 6.12.0-160000.6.1.160000.2.4 | [OPENSUSE-SU-2025:20091-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20091-1.md) | Nov 26, 2025 |
| Linux | kernel-default-base sles 16.0 | 6.12.0-160000.6.1.160000.2.4 | [SUSE-SU-2025:21147-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-21147-1.md) | Nov 26, 2025 |
| Linux | kernel-docs opensuse-leap 16.0 | 6.12.0-160000.7.1 | [OPENSUSE-SU-2025:20091-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20091-1.md) | Nov 26, 2025 |
| Linux | kernel-docs sles 16.0 | 6.12.0-160000.7.1 | [SUSE-SU-2025:21147-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-21147-1.md) | Nov 26, 2025 |
| Linux | kernel-kvmsmall opensuse-leap 16.0 | 6.12.0-160000.7.1 | [OPENSUSE-SU-2025:20091-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20091-1.md) | Nov 26, 2025 |
| Linux | kernel-kvmsmall sles 16.0 | 6.12.0-160000.7.1 | [SUSE-SU-2025:21147-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-21147-1.md) | Nov 26, 2025 |
| Linux | kernel-livepatch-6.12.53-69.119 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | kernel-obs-build opensuse-leap 16.0 | 6.12.0-160000.7.1 | [OPENSUSE-SU-2025:20091-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20091-1.md) | Nov 26, 2025 |
| Linux | kernel-obs-qa opensuse-leap 16.0 | 6.12.0-160000.7.1 | [OPENSUSE-SU-2025:20091-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20091-1.md) | Nov 26, 2025 |
| Linux | kernel-obs-qa sles 16.0 | 6.12.0-160000.7.1 | [SUSE-SU-2025:21147-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-21147-1.md) | Nov 26, 2025 |
| Linux | kernel-rt opensuse-leap 16.0 | 6.12.0-160000.7.1 | [OPENSUSE-SU-2025:20091-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20091-1.md) | Nov 26, 2025 |
| Linux | kernel-source opensuse-leap 16.0 | 6.12.0-160000.7.1 | [OPENSUSE-SU-2025:20091-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20091-1.md) | Nov 26, 2025 |
| Linux | kernel-source sles 16.0 | 6.12.0-160000.7.1 | [SUSE-SU-2025:21147-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-21147-1.md) | Nov 26, 2025 |
| Linux | kernel-syms opensuse-leap 16.0 | 6.12.0-160000.7.1 | [OPENSUSE-SU-2025:20091-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20091-1.md) | Nov 26, 2025 |
| Linux | kernel-syms sles 16.0 | 6.12.0-160000.7.1 | [SUSE-SU-2025:21147-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-21147-1.md) | Nov 26, 2025 |
| Linux | kernel-zfcpdump opensuse-leap 16.0 | 6.12.0-160000.7.1 | [OPENSUSE-SU-2025:20091-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20091-1.md) | Nov 26, 2025 |
| Linux | kernel-zfcpdump sles 16.0 | 6.12.0-160000.7.1 | [SUSE-SU-2025:21147-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-21147-1.md) | Nov 26, 2025 |
| Linux | kernel6.12 amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | kernel6.12-debuginfo amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | kernel6.12-debuginfo-common-aarch64 amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | kernel6.12-debuginfo-common-x86_64 amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | kernel6.12-devel amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | kernel6.12-headers amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | kernel6.12-libbpf amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | kernel6.12-libbpf-debuginfo amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | kernel6.12-libbpf-devel amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | kernel6.12-libbpf-static amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | kernel6.12-modules-extra amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | kernel6.12-modules-extra-common amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | kernel6.12-tools amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | kernel6.12-tools-debuginfo amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | kernel6.12-tools-devel amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.12.57-1 | [DEBIAN-CVE-2025-40009](https://patchblox.com/security/data/fix/linux/debian-cve-2025-40009.md) | Oct 20, 2025 |
| Linux | linux Debian 14 | 6.16.10-1 | [DEBIAN-CVE-2025-40009](https://patchblox.com/security/data/fix/linux/debian-cve-2025-40009.md) | Oct 20, 2025 |
| Linux | perf6.12 amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | perf6.12-debuginfo amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | python3-perf6.12 amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |
| Linux | python3-perf6.12-debuginfo amzn 2023 | 1:6.12.53-69.119.amzn2023 | [ALAS2023-2025-1254](https://patchblox.com/security/data/fix/linux/alas2023-2025-1254.md) | Oct 27, 2025 |

---

Data as of 2026-11-11T13:47:35Z 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

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