# CVE-2025-40202: ipmi: Rework user message limit handling

CVE-2025-40202 is fixed in 42 products on 1 platform, first by DEBIAN-CVE-2025-40202, released November 12, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-40202
- Priority: High
- CVSS: 7.8 (Moderate)
- EPSS: 0.0015
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 12, 2025
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-40202

## Description

In the Linux kernel, the following vulnerability has been resolved:  ipmi: Rework user message limit handling  The limit on the number of user messages had a number of issues, improper counting in some cases and a use after free.  Restructure how this is all done to handle more in the receive message allocation routine, so all refcouting and user message limit counts are done in that routine.  It's a lot cleaner and safer.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bpftool6.12 amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | bpftool6.12-debuginfo amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | dtb-aarch64 opensuse-leap 15.6 | 6.4.0-150600.23.87.1 | [SUSE-SU-2026:0471-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0471-1.md) | Feb 12, 2026 |
| Linux | dtb-aarch64 opensuse-leap 16.0 | 6.12.0-160000.8.1 | [OPENSUSE-SU-2025:20172-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20172-1.md) | Dec 19, 2025 |
| Linux | kernel-64kb opensuse-leap 15.6 | 6.4.0-150600.23.87.1 | [SUSE-SU-2026:0471-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0471-1.md) | Feb 12, 2026 |
| Linux | kernel-64kb opensuse-leap 16.0 | 6.12.0-160000.8.1 | [OPENSUSE-SU-2025:20172-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20172-1.md) | Dec 19, 2025 |
| Linux | kernel-64kb sles 15.7 | 6.4.0-150700.53.31.1 | [SUSE-SU-2026:0447-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0447-1.md) | Feb 11, 2026 |
| Linux | kernel-64kb sles 16.0 | 6.12.0-160000.8.1 | [SUSE-SU-2026:20015-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20015-1.md) | Dec 19, 2025 |
| Linux | kernel-azure sles 15.7 | 6.4.0-150700.20.27.1 | [SUSE-SU-2026:0472-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0472-1.md) | Feb 12, 2026 |
| Linux | kernel-debug opensuse-leap 15.6 | 6.4.0-150600.23.87.1 | [SUSE-SU-2026:0471-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0471-1.md) | Feb 12, 2026 |
| Linux | kernel-default opensuse-leap 15.6 | 6.4.0-150600.23.87.1 | [SUSE-SU-2026:0471-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0471-1.md) | Feb 12, 2026 |
| Linux | kernel-default opensuse-leap 16.0 | 6.12.0-160000.8.1 | [OPENSUSE-SU-2025:20172-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20172-1.md) | Dec 19, 2025 |
| Linux | kernel-default sles 15.6 | 6.4.0-150600.23.87.1 | [SUSE-SU-2026:0471-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0471-1.md) | Feb 12, 2026 |
| Linux | kernel-default sles 15.7 | 6.4.0-150700.53.31.1 | [SUSE-SU-2026:0447-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0447-1.md) | Feb 11, 2026 |
| Linux | kernel-default sles 16.0 | 6.12.0-160000.8.1 | [SUSE-SU-2026:20015-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20015-1.md) | Dec 19, 2025 |
| Linux | kernel-default-base opensuse-leap 15.6 | 6.4.0-150600.23.87.1.150600.12.40.1 | [SUSE-SU-2026:0471-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0471-1.md) | Feb 12, 2026 |
| Linux | kernel-default-base opensuse-leap 16.0 | 6.12.0-160000.8.1.160000.2.5 | [OPENSUSE-SU-2025:20172-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20172-1.md) | Dec 19, 2025 |
| Linux | kernel-default-base sles 15.6 | 6.4.0-150600.23.87.1.150600.12.40.1 | [SUSE-SU-2026:0471-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0471-1.md) | Feb 12, 2026 |
| Linux | kernel-default-base sles 15.7 | 6.4.0-150700.53.31.1.150700.17.21.1 | [SUSE-SU-2026:0447-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0447-1.md) | Feb 11, 2026 |
| Linux | kernel-default-base sles 16.0 | 6.12.0-160000.8.1.160000.2.5 | [SUSE-SU-2026:20015-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20015-1.md) | Dec 19, 2025 |
| Linux | kernel-docs opensuse-leap 15.6 | 6.4.0-150600.23.87.1 | [SUSE-SU-2026:0471-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0471-1.md) | Feb 12, 2026 |
| Linux | kernel-docs opensuse-leap 16.0 | 6.12.0-160000.8.1 | [OPENSUSE-SU-2025:20172-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20172-1.md) | Dec 19, 2025 |
| Linux | kernel-docs sles 15.6 | 6.4.0-150600.23.87.1 | [SUSE-SU-2026:0471-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0471-1.md) | Feb 12, 2026 |
| Linux | kernel-docs sles 15.7 | 6.4.0-150700.53.31.1 | [SUSE-SU-2026:0447-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0447-1.md) | Feb 11, 2026 |
| Linux | kernel-docs sles 16.0 | 6.12.0-160000.8.1 | [SUSE-SU-2026:20015-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20015-1.md) | Dec 19, 2025 |
| Linux | kernel-kvmsmall opensuse-leap 15.6 | 6.4.0-150600.23.87.1 | [SUSE-SU-2026:0471-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0471-1.md) | Feb 12, 2026 |
| Linux | kernel-kvmsmall opensuse-leap 16.0 | 6.12.0-160000.8.1 | [OPENSUSE-SU-2025:20172-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20172-1.md) | Dec 19, 2025 |
| Linux | kernel-kvmsmall sles 16.0 | 6.12.0-160000.8.1 | [SUSE-SU-2026:20015-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20015-1.md) | Dec 19, 2025 |
| Linux | kernel-livepatch-6.12.55-74.119 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | kernel-livepatch-SLE15-SP6_Update_20 sles 15.6 | 1-150600.13.3.1 | [SUSE-SU-2026:0471-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0471-1.md) | Feb 12, 2026 |
| Linux | kernel-livepatch-SLE15-SP7-RT_Update_9 sles 15.7 | 1-150700.1.3.2 | [SUSE-SU-2026:0587-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0587-1.md) | Feb 20, 2026 |
| Linux | kernel-livepatch-SLE15-SP7_Update_9 sles 15.7 | 1-150700.15.3.1 | [SUSE-SU-2026:0447-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0447-1.md) | Feb 11, 2026 |
| Linux | kernel-obs-build opensuse-leap 15.6 | 6.4.0-150600.23.87.1 | [SUSE-SU-2026:0471-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0471-1.md) | Feb 12, 2026 |
| Linux | kernel-obs-build opensuse-leap 16.0 | 6.12.0-160000.8.1 | [OPENSUSE-SU-2025:20172-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20172-1.md) | Dec 19, 2025 |
| Linux | kernel-obs-build sles 15.6 | 6.4.0-150600.23.87.1 | [SUSE-SU-2026:0471-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0471-1.md) | Feb 12, 2026 |
| Linux | kernel-obs-build sles 15.7 | 6.4.0-150700.53.31.1 | [SUSE-SU-2026:0447-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0447-1.md) | Feb 11, 2026 |
| Linux | kernel-obs-qa opensuse-leap 15.6 | 6.4.0-150600.23.87.1 | [SUSE-SU-2026:0471-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0471-1.md) | Feb 12, 2026 |
| Linux | kernel-obs-qa opensuse-leap 16.0 | 6.12.0-160000.8.1 | [OPENSUSE-SU-2025:20172-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20172-1.md) | Dec 19, 2025 |
| Linux | kernel-obs-qa sles 16.0 | 6.12.0-160000.8.1 | [SUSE-SU-2026:20015-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20015-1.md) | Dec 19, 2025 |
| Linux | kernel-rt opensuse-leap 16.0 | 6.12.0-160000.8.1 | [OPENSUSE-SU-2025:20172-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20172-1.md) | Dec 19, 2025 |
| Linux | kernel-source opensuse-leap 15.6 | 6.4.0-150600.23.87.1 | [SUSE-SU-2026:0471-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0471-1.md) | Feb 12, 2026 |
| Linux | kernel-source opensuse-leap 16.0 | 6.12.0-160000.8.1 | [OPENSUSE-SU-2025:20172-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20172-1.md) | Dec 19, 2025 |
| Linux | kernel-source sles 15.6 | 6.4.0-150600.23.87.1 | [SUSE-SU-2026:0471-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0471-1.md) | Feb 12, 2026 |
| Linux | kernel-source sles 15.7 | 6.4.0-150700.53.31.1 | [SUSE-SU-2026:0447-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0447-1.md) | Feb 11, 2026 |
| Linux | kernel-source sles 16.0 | 6.12.0-160000.8.1 | [SUSE-SU-2026:20015-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20015-1.md) | Dec 19, 2025 |
| Linux | kernel-source-azure sles 15.7 | 6.4.0-150700.20.27.1 | [SUSE-SU-2026:0472-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0472-1.md) | Feb 12, 2026 |
| Linux | kernel-syms opensuse-leap 15.6 | 6.4.0-150600.23.87.1 | [SUSE-SU-2026:0471-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0471-1.md) | Feb 12, 2026 |
| Linux | kernel-syms opensuse-leap 16.0 | 6.12.0-160000.8.1 | [OPENSUSE-SU-2025:20172-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20172-1.md) | Dec 19, 2025 |
| Linux | kernel-syms sles 15.6 | 6.4.0-150600.23.87.1 | [SUSE-SU-2026:0471-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0471-1.md) | Feb 12, 2026 |
| Linux | kernel-syms sles 15.7 | 6.4.0-150700.53.31.1 | [SUSE-SU-2026:0447-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0447-1.md) | Feb 11, 2026 |
| Linux | kernel-syms sles 16.0 | 6.12.0-160000.8.1 | [SUSE-SU-2026:20015-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20015-1.md) | Dec 19, 2025 |
| Linux | kernel-syms-azure sles 15.7 | 6.4.0-150700.20.27.1 | [SUSE-SU-2026:0472-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0472-1.md) | Feb 12, 2026 |
| Linux | kernel-zfcpdump opensuse-leap 15.6 | 6.4.0-150600.23.87.1 | [SUSE-SU-2026:0471-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0471-1.md) | Feb 12, 2026 |
| Linux | kernel-zfcpdump opensuse-leap 16.0 | 6.12.0-160000.8.1 | [OPENSUSE-SU-2025:20172-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20172-1.md) | Dec 19, 2025 |
| Linux | kernel-zfcpdump sles 15.7 | 6.4.0-150700.53.31.1 | [SUSE-SU-2026:0447-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0447-1.md) | Feb 11, 2026 |
| Linux | kernel-zfcpdump sles 16.0 | 6.12.0-160000.8.1 | [SUSE-SU-2026:20015-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20015-1.md) | Dec 19, 2025 |
| Linux | kernel6.12 amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | kernel6.12-debuginfo amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | kernel6.12-debuginfo-common-aarch64 amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | kernel6.12-debuginfo-common-x86_64 amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | kernel6.12-devel amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | kernel6.12-headers amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | kernel6.12-libbpf amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | kernel6.12-libbpf-debuginfo amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | kernel6.12-libbpf-devel amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | kernel6.12-libbpf-static amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | kernel6.12-modules-extra amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | kernel6.12-modules-extra-common amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | kernel6.12-tools amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | kernel6.12-tools-debuginfo amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | kernel6.12-tools-devel amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | linux Debian 12.15 (bookworm) | 6.1.158-1 | [DEBIAN-CVE-2025-40202](https://patchblox.com/security/data/fix/linux/debian-cve-2025-40202.md) | Nov 12, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.12.57-1 | [DEBIAN-CVE-2025-40202](https://patchblox.com/security/data/fix/linux/debian-cve-2025-40202.md) | Nov 12, 2025 |
| Linux | linux Debian 14 | 6.17.6-1 | [DEBIAN-CVE-2025-40202](https://patchblox.com/security/data/fix/linux/debian-cve-2025-40202.md) | Nov 12, 2025 |
| Linux | perf6.12 amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | perf6.12-debuginfo amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | python3-perf6.12 amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |
| Linux | python3-perf6.12-debuginfo amzn 2023 | 1:6.12.55-74.119.amzn2023 | [ALAS2023-2025-1316](https://patchblox.com/security/data/fix/linux/alas2023-2025-1316.md) | Dec 8, 2025 |

---

Data as of 2026-11-08T06:59:42Z 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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