CVE-2025-38686
linux: In the Linux kernel, the following vulnerability has been resolved: userfaultfd: fix a crash in UFFDIO_MOVE when PMD...
CVE-2025-38686 is fixed in 70 products on 1 platform, first by DEBIAN-CVE-2025-38686, released September 4, 2025. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
5.5
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0017
5th percentile
In the Linux kernel, the following vulnerability has been resolved: userfaultfd: fix a crash in UFFDIO_MOVE when PMD is a migration entry When UFFDIO_MOVE encounters a migration PMD entry, it proceeds with obtaining a folio and accessing it even though the entry is swp_entry_t. Add the missing check and let split_huge_pmd() handle migration entries. While at it also remove unnecessary folio check. [surenb@google.com: remove extra folio check, per David]
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| bpftool6.12 · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| bpftool6.12-debuginfo · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| dtb-aarch64 · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-64kb · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-64kb · sles 16.0 | 6.12.0-160000.6.1 | SUSE-SU-2025:21139-1 | Nov 25, 2025 |
| kernel-default · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-default · sles 16.0 | 6.12.0-160000.6.1 | SUSE-SU-2025:21139-1 | Nov 25, 2025 |
| kernel-default-base · opensuse-leap 16.0 | 6.12.0-160000.6.1.160000.2.4 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-default-base · sles 16.0 | 6.12.0-160000.6.1.160000.2.4 | SUSE-SU-2025:21139-1 | Nov 25, 2025 |
| kernel-docs · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-docs · sles 16.0 | 6.12.0-160000.6.1 | SUSE-SU-2025:21139-1 | Nov 25, 2025 |
| kernel-kvmsmall · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-kvmsmall · sles 16.0 | 6.12.0-160000.6.1 | SUSE-SU-2025:21139-1 | Nov 25, 2025 |
| kernel-livepatch-6.12.46-66.121 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| kernel-obs-build · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-obs-qa · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-obs-qa · sles 16.0 | 6.12.0-160000.6.1 | SUSE-SU-2025:21139-1 | Nov 25, 2025 |
| kernel-rt · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-source · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-source · sles 16.0 | 6.12.0-160000.6.1 | SUSE-SU-2025:21139-1 | Nov 25, 2025 |
| kernel-syms · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-syms · sles 16.0 | 6.12.0-160000.6.1 | SUSE-SU-2025:21139-1 | Nov 25, 2025 |
| kernel-uek · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-core · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-core · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-core · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-core · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-devel · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-devel · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-core · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-core · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-deprecated · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-deprecated · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-desktop · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-desktop · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-extra · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-extra · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-extra-netfilter · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-extra-netfilter · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-usb · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-usb · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-wireless · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-debug-modules-wireless · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-devel · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-devel · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-doc · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-doc · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-core · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-core · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-deprecated · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-deprecated · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-desktop · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-desktop · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-extra · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-extra · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-extra-netfilter · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-extra-netfilter · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-usb · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-usb · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-wireless · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-modules-wireless · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-tools · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek-tools · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-core · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-core · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-devel · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-devel · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-core · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-core · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-deprecated · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-deprecated · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-desktop · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-desktop · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-extra · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-extra · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-extra-netfilter · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-extra-netfilter · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-usb · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-usb · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-wireless · ol 10 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-uek64k-modules-wireless · ol 9 | 0:6.12.0-104.43.4.2.el9uek | ELSA-2025-20662 | Oct 14, 2025 |
| kernel-zfcpdump · opensuse-leap 16.0 | 6.12.0-160000.6.1 | OPENSUSE-SU-2025:20081-1 | Nov 25, 2025 |
| kernel-zfcpdump · sles 16.0 | 6.12.0-160000.6.1 | SUSE-SU-2025:21139-1 | Nov 25, 2025 |
| kernel6.12 · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| kernel6.12-debuginfo · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| kernel6.12-debuginfo-common-aarch64 · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| kernel6.12-debuginfo-common-x86_64 · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| kernel6.12-devel · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| kernel6.12-headers · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| kernel6.12-libbpf · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| kernel6.12-libbpf-debuginfo · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| kernel6.12-libbpf-devel · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| kernel6.12-libbpf-static · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| kernel6.12-modules-extra · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| kernel6.12-modules-extra-common · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| kernel6.12-tools · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| kernel6.12-tools-debuginfo · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| kernel6.12-tools-devel · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| linux · Debian 13.5 (trixie) | 6.12.43-1 | DEBIAN-CVE-2025-38686 | Sep 4, 2025 |
| linux · Debian 14 | 6.16.3-1 | DEBIAN-CVE-2025-38686 | Sep 4, 2025 |
| perf6.12 · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| perf6.12-debuginfo · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| python3-perf6.12 · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
| python3-perf6.12-debuginfo · amzn 2023 | 1:6.12.46-66.121.amzn2023 | ALAS2023-2025-1208 | Sep 23, 2025 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
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.