{"cve":"CVE-2025-39908","nvd":{"published":"2025-10-01T08:15:33.727","modified":"2026-10-19T21:10:00.160","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dev_ioctl: take ops lock in hwtstamp lower paths\n\nndo hwtstamp callbacks are expected to run under the per-device ops\nlock. Make the lower get/set paths consistent with the rest of ndo\ninvocations.\n\nKernel log:\nWARNING: CPU: 13 PID: 51364 at ./include/net/netdev_lock.h:70 __netdev_update_features+0x4bd/0xe60\n...\nRIP: 0010:__netdev_update_features+0x4bd/0xe60\n...\nCall Trace:\n<TASK>\nnetdev_update_features+0x1f/0x60\nmlx5_hwtstamp_set+0x181/0x290 [mlx5_core]\nmlx5e_hwtstamp_set+0x19/0x30 [mlx5_core]\ndev_set_hwtstamp_phylib+0x9f/0x220\ndev_set_hwtstamp_phylib+0x9f/0x220\ndev_set_hwtstamp+0x13d/0x240\ndev_ioctl+0x12f/0x4b0\nsock_ioctl+0x171/0x370\n__x64_sys_ioctl+0x3f7/0x900\n? __sys_setsockopt+0x69/0xb0\ndo_syscall_64+0x6f/0x2e0\nentry_SYSCALL_64_after_hwframe+0x4b/0x53\n...\n</TASK>\n....\n---[ end trace 0000000000000000 ]---\n\nNote that the mlx5_hwtstamp_set and mlx5e_hwtstamp_set functions shown\nin the trace come from an in progress patch converting the legacy ioctl\nto ndo_hwtstamp_get/set and are not present in mainline.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/2d92fa0cdc02291de57f72170e8b60cef0cf5372","https://git.kernel.org/stable/c/686cab5a18e443e1d5f2abb17bed45837836425f"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-21T03:43:09.190223697+00:00"},"epss":{"cve":"CVE-2025-39908","score":0.00139,"percentile":0.03207,"date":"2026-10-26"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}