# CVE-2025-39846: pcmcia: Fix a NULL pointer dereference in __iodyn_find_io_region()

CVE-2025-39846 is fixed in 46 products on 1 platform, first by DEBIAN-CVE-2025-39846, released September 19, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-39846
- Priority: Routine
- CVSS: 5.5 (Moderate)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 19, 2025
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-39846

## Description

In the Linux kernel, the following vulnerability has been resolved:  pcmcia: Fix a NULL pointer dereference in __iodyn_find_io_region()  In __iodyn_find_io_region(), pcmcia_make_resource() is assigned to res and used in pci_bus_alloc_resource(). There is a dereference of res in pci_bus_alloc_resource(), which could lead to a NULL pointer dereference on failure of pcmcia_make_resource().  Fix this bug by adding a check of res.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bpftool amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | bpftool-debuginfo amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | dtb-aarch64 opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | kernel-64kb opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel-64kb sles 15.6 | 6.4.0-150600.23.73.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel-64kb sles 15.7 | 6.4.0-150700.53.22.1 | [SUSE-SU-2025:4057-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4057-1.md) | Nov 11, 2025 |
| Linux | kernel-azure opensuse-leap 15.6 | 6.4.0-150600.8.52.1 | [SUSE-SU-2025:03634-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03634-1.md) | Oct 17, 2025 |
| Linux | kernel-azure sles 15.6 | 6.4.0-150600.8.52.1 | [SUSE-SU-2025:03634-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03634-1.md) | Oct 17, 2025 |
| Linux | kernel-azure sles 15.7 | 6.4.0-150700.20.18.1 | [SUSE-SU-2025:4132-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4132-1.md) | Nov 18, 2025 |
| Linux | kernel-debug opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel-debuginfo amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | kernel-debuginfo-common-aarch64 amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | kernel-debuginfo-common-x86_64 amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | kernel-default opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel-default sles 15.6 | 6.4.0-150600.23.73.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel-default sles 15.7 | 6.4.0-150700.53.22.1 | [SUSE-SU-2025:4057-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4057-1.md) | Nov 11, 2025 |
| Linux | kernel-default-base opensuse-leap 15.6 | 6.4.0-150600.23.73.1.150600.12.32.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel-default-base sles 15.6 | 6.4.0-150600.23.73.1.150600.12.32.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel-default-base sles 15.7 | 6.4.0-150700.53.22.1.150700.17.15.1 | [SUSE-SU-2025:4057-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4057-1.md) | Nov 11, 2025 |
| Linux | kernel-devel amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | kernel-docs opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel-docs sles 15.6 | 6.4.0-150600.23.73.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel-docs sles 15.7 | 6.4.0-150700.53.22.1 | [SUSE-SU-2025:4057-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4057-1.md) | Nov 11, 2025 |
| Linux | kernel-headers amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | kernel-kvmsmall opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel-libbpf amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | kernel-libbpf-debuginfo amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | kernel-libbpf-devel amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | kernel-libbpf-static amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | kernel-livepatch-6.1.153-175.280 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | kernel-livepatch-SLE15-SP6-RT_Update_16 sles 15.6 | 1-150600.1.3.1 | [SUSE-SU-2025:3751-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-3751-1.md) | Oct 23, 2025 |
| Linux | kernel-livepatch-SLE15-SP6_Update_16 sles 15.6 | 1-150600.13.3.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel-livepatch-SLE15-SP7-RT_Update_6 sles 15.7 | 1-150700.1.3.1 | [SUSE-SU-2025:4141-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4141-1.md) | Nov 19, 2025 |
| Linux | kernel-livepatch-SLE15-SP7_Update_6 sles 15.7 | 1-150700.15.3.1 | [SUSE-SU-2025:4057-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4057-1.md) | Nov 11, 2025 |
| Linux | kernel-modules-extra amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | kernel-modules-extra-common amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | kernel-obs-build opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel-obs-build sles 15.6 | 6.4.0-150600.23.73.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel-obs-build sles 15.7 | 6.4.0-150700.53.22.1 | [SUSE-SU-2025:4057-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4057-1.md) | Nov 11, 2025 |
| Linux | kernel-obs-qa opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel-rt opensuse-leap 15.6 | 6.4.0-150600.10.55.1 | [SUSE-SU-2025:3751-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-3751-1.md) | Oct 23, 2025 |
| Linux | kernel-rt_debug opensuse-leap 15.6 | 6.4.0-150600.10.55.1 | [SUSE-SU-2025:3751-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-3751-1.md) | Oct 23, 2025 |
| Linux | kernel-source opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel-source sles 15.6 | 6.4.0-150600.23.73.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel-source sles 15.7 | 6.4.0-150700.53.22.1 | [SUSE-SU-2025:4057-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4057-1.md) | Nov 11, 2025 |
| Linux | kernel-source-azure opensuse-leap 15.6 | 6.4.0-150600.8.52.1 | [SUSE-SU-2025:03634-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03634-1.md) | Oct 17, 2025 |
| Linux | kernel-source-azure sles 15.6 | 6.4.0-150600.8.52.1 | [SUSE-SU-2025:03634-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03634-1.md) | Oct 17, 2025 |
| Linux | kernel-source-azure sles 15.7 | 6.4.0-150700.20.18.1 | [SUSE-SU-2025:4132-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4132-1.md) | Nov 18, 2025 |
| Linux | kernel-source-rt opensuse-leap 15.6 | 6.4.0-150600.10.55.1 | [SUSE-SU-2025:3751-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-3751-1.md) | Oct 23, 2025 |
| Linux | kernel-syms opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel-syms sles 15.6 | 6.4.0-150600.23.73.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel-syms sles 15.7 | 6.4.0-150700.53.22.1 | [SUSE-SU-2025:4057-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4057-1.md) | Nov 11, 2025 |
| Linux | kernel-syms-azure opensuse-leap 15.6 | 6.4.0-150600.8.52.1 | [SUSE-SU-2025:03634-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03634-1.md) | Oct 17, 2025 |
| Linux | kernel-syms-azure sles 15.6 | 6.4.0-150600.8.52.1 | [SUSE-SU-2025:03634-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03634-1.md) | Oct 17, 2025 |
| Linux | kernel-syms-azure sles 15.7 | 6.4.0-150700.20.18.1 | [SUSE-SU-2025:4132-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4132-1.md) | Nov 18, 2025 |
| Linux | kernel-syms-rt opensuse-leap 15.6 | 6.4.0-150600.10.55.1 | [SUSE-SU-2025:3751-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-3751-1.md) | Oct 23, 2025 |
| Linux | kernel-tools amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | kernel-tools-debuginfo amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | kernel-tools-devel amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | kernel-zfcpdump opensuse-leap 15.6 | 6.4.0-150600.23.73.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel-zfcpdump sles 15.6 | 6.4.0-150600.23.73.1 | [SUSE-SU-2025:03600-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-03600-1.md) | Oct 15, 2025 |
| Linux | kernel-zfcpdump sles 15.7 | 6.4.0-150700.53.22.1 | [SUSE-SU-2025:4057-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4057-1.md) | Nov 11, 2025 |
| Linux | linux Debian 12.15 (bookworm) | 6.1.153-1 | [DEBIAN-CVE-2025-39846](https://patchblox.com/security/data/fix/linux/debian-cve-2025-39846.md) | Sep 19, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.12.48-1 | [DEBIAN-CVE-2025-39846](https://patchblox.com/security/data/fix/linux/debian-cve-2025-39846.md) | Sep 19, 2025 |
| Linux | linux Debian 14 | 6.16.6-1 | [DEBIAN-CVE-2025-39846](https://patchblox.com/security/data/fix/linux/debian-cve-2025-39846.md) | Sep 19, 2025 |
| Linux | perf amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | perf-debuginfo amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | python3-perf amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |
| Linux | python3-perf-debuginfo amzn 2023 | 1:6.1.153-175.280.amzn2023 | [ALAS2023-2025-1210](https://patchblox.com/security/data/fix/linux/alas2023-2025-1210.md) | Sep 24, 2025 |

---

Data as of 2026-11-08T13:06:02Z 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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