# CVE-2025-39908: linux: In the Linux kernel, the following vulnerability has been resolved: net: dev_ioctl: take ops lock in hwtstamp lower... CVE-2025-39908 is fixed in 36 products on 1 platform, first by DEBIAN-CVE-2025-39908, released October 1, 2025. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2025-39908 - Priority: Routine - CVSS: 5.5 (medium) - EPSS: 0.0014 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Oct 1, 2025 ## Description In the Linux kernel, the following vulnerability has been resolved: net: dev_ioctl: take ops lock in hwtstamp lower paths ndo hwtstamp callbacks are expected to run under the per-device ops lock. Make the lower get/set paths consistent with the rest of ndo invocations. Kernel log: WARNING: CPU: 13 PID: 51364 at ./include/net/netdev_lock.h:70 __netdev_update_features+0x4bd/0xe60 ... RIP: 0010:__netdev_update_features+0x4bd/0xe60 ... Call Trace: netdev_update_features+0x1f/0x60 mlx5_hwtstamp_set+0x181/0x290 [mlx5_core] mlx5e_hwtstamp_set+0x19/0x30 [mlx5_core] dev_set_hwtstamp_phylib+0x9f/0x220 dev_set_hwtstamp_phylib+0x9f/0x220 dev_set_hwtstamp+0x13d/0x240 dev_ioctl+0x12f/0x4b0 sock_ioctl+0x171/0x370 __x64_sys_ioctl+0x3f7/0x900 ? __sys_setsockopt+0x69/0xb0 do_syscall_64+0x6f/0x2e0 entry_SYSCALL_64_after_hwframe+0x4b/0x53 ... .... ---[ end trace 0000000000000000 ]--- Note that the mlx5_hwtstamp_set and mlx5e_hwtstamp_set functions shown in the trace come from an in progress patch converting the legacy ioctl to ndo_hwtstamp_get/set and are not present in mainline. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | kernel-uek ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-core ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-core ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug-core ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug-core ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug-devel ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug-devel ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug-modules ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug-modules ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug-modules-core ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug-modules-core ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug-modules-deprecated ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug-modules-deprecated ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug-modules-desktop ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug-modules-desktop ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug-modules-extra ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug-modules-extra ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug-modules-extra-netfilter ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug-modules-extra-netfilter ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug-modules-usb ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug-modules-usb ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug-modules-wireless ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-debug-modules-wireless ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-devel ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-devel ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-doc ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-doc ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-modules ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-modules ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-modules-core ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-modules-core ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-modules-deprecated ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-modules-deprecated ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-modules-desktop ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-modules-desktop ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-modules-extra ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-modules-extra ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-modules-extra-netfilter ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-modules-extra-netfilter ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-modules-usb ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-modules-usb ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-modules-wireless ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-modules-wireless ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-tools ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek-tools ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k-core ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k-core ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k-devel ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k-devel ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k-modules ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k-modules ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k-modules-core ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k-modules-core ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k-modules-deprecated ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k-modules-deprecated ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k-modules-desktop ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k-modules-desktop ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k-modules-extra ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k-modules-extra ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k-modules-extra-netfilter ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k-modules-extra-netfilter ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k-modules-usb ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k-modules-usb ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k-modules-wireless ol 10 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | kernel-uek64k-modules-wireless ol 9 | 0:6.12.0-205.92.4.2.el9uek | [ELSA-2026-500150](https://patchblox.com/security/data/fix/linux/elsa-2026-500150.md) | Aug 8, 2026 | | Linux | linux Debian 14 | 6.16.8-1 | [DEBIAN-CVE-2025-39908](https://patchblox.com/security/data/fix/linux/debian-cve-2025-39908.md) | Oct 1, 2025 | --- Data as of 2026-11-09T01:18:40Z UTC. 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