{"cve":"CVE-2025-21801","nvd":{"published":"2025-02-27T20:16:02.753","modified":"2026-10-21T13:17:58.277","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ravb: Fix missing rtnl lock in suspend/resume path\n\nFix the suspend/resume path by ensuring the rtnl lock is held where\nrequired. Calls to ravb_open, ravb_close and wol operations must be\nperformed under the rtnl lock to prevent conflicts with ongoing ndo\noperations.\n\nWithout this fix, the following warning is triggered:\n[   39.032969] =============================\n[   39.032983] WARNING: suspicious RCU usage\n[   39.033019] -----------------------------\n[   39.033033] drivers/net/phy/phy_device.c:2004 suspicious\nrcu_dereference_protected() usage!\n...\n[   39.033597] stack backtrace:\n[   39.033613] CPU: 0 UID: 0 PID: 174 Comm: python3 Not tainted\n6.13.0-rc7-next-20250116-arm64-renesas-00002-g35245dfdc62c #7\n[   39.033623] Hardware name: Renesas SMARC EVK version 2 based on\nr9a08g045s33 (DT)\n[   39.033628] Call trace:\n[   39.033633]  show_stack+0x14/0x1c (C)\n[   39.033652]  dump_stack_lvl+0xb4/0xc4\n[   39.033664]  dump_stack+0x14/0x1c\n[   39.033671]  lockdep_rcu_suspicious+0x16c/0x22c\n[   39.033682]  phy_detach+0x160/0x190\n[   39.033694]  phy_disconnect+0x40/0x54\n[   39.033703]  ravb_close+0x6c/0x1cc\n[   39.033714]  ravb_suspend+0x48/0x120\n[   39.033721]  dpm_run_callback+0x4c/0x14c\n[   39.033731]  device_suspend+0x11c/0x4dc\n[   39.033740]  dpm_suspend+0xdc/0x214\n[   39.033748]  dpm_suspend_start+0x48/0x60\n[   39.033758]  suspend_devices_and_enter+0x124/0x574\n[   39.033769]  pm_suspend+0x1ac/0x274\n[   39.033778]  state_store+0x88/0x124\n[   39.033788]  kobj_attr_store+0x14/0x24\n[   39.033798]  sysfs_kf_write+0x48/0x6c\n[   39.033808]  kernfs_fop_write_iter+0x118/0x1a8\n[   39.033817]  vfs_write+0x27c/0x378\n[   39.033825]  ksys_write+0x64/0xf4\n[   39.033833]  __arm64_sys_write+0x18/0x20\n[   39.033841]  invoke_syscall+0x44/0x104\n[   39.033852]  el0_svc_common.constprop.0+0xb4/0xd4\n[   39.033862]  do_el0_svc+0x18/0x20\n[   39.033870]  el0_svc+0x3c/0xf0\n[   39.033880]  el0t_64_sync_handler+0xc0/0xc4\n[   39.033888]  el0t_64_sync+0x154/0x158\n[   39.041274] ravb 11c30000.ethernet eth0: Link is Down","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/0296981941cf291edfbc318d3255a93439f368e4","https://git.kernel.org/stable/c/2c2ebb2b49573e5f8726112ad06b1dffc3c9ea03","https://git.kernel.org/stable/c/6105f0d9cc7be8669c2eed24b88b4655d5c35e8c","https://git.kernel.org/stable/c/ad19522c007bb24ed874468f8baa1503c4662cf4"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2025-21801","score":0.00251,"percentile":0.16288,"date":"2026-10-25"},"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."]}