{"id":"CVE-2026-64162","revision":"21cd60cc7a9e4e39864fc36c9e0e7794","records":[{"revision":"21cd60cc7a9e4e39864fc36c9e0e7794","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-64162","aliases":[],"title":"idpf: fix read_dev_clk_lock spinlock init in idpf_ptp_init()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nidpf: fix read_dev_clk_lock spinlock init in idpf_ptp_init()\n\nIn idpf_ptp_init(), read_dev_clk_lock is initialized after\nptp_schedule_worker() had already been called (and after\nidpf_ptp_settime64() could reach the lock). The PTP aux worker\nfires immediately upon scheduling and can call into\nidpf_ptp_read_src_clk_reg_direct(), which takes\nspin_lock(&ptp->read_dev_clk_lock) on an uninitialized lock, triggering\nthe lockdep \"non-static key\" warning:\n\n[12973.796587] idpf 0000:83:00.0: Device HW Reset initiated\n[12974.094507] INFO: trying to register non-static key.\n...\n[12974.097208] Call Trace:\n[12974.097213]  <TASK>\n[12974.097218]  dump_stack_lvl+0x93/0xe0\n[12974.097234]  register_lock_class+0x4c4/0x4e0\n[12974.097249]  ? __lock_acquire+0x427/0x2290\n[12974.097259]  __lock_acquire+0x98/0x2290\n[12974.097272]  lock_acquire+0xc6/0x310\n[12974.097281]  ? idpf_ptp_read_src_clk_reg+0xb7/0x150 [idpf]\n[12974.097311]  ? lockdep_hardirqs_on_prepare+0xde/0x190\n[12974.097318]  ? finish_task_switch.isra.0+0xd2/0x350\n[12974.097330]  ? __pfx_ptp_aux_kworker+0x10/0x10 [ptp]\n[12974.097343]  _raw_spin_lock+0x30/0x40\n[12974.097353]  ? idpf_ptp_read_src_clk_reg+0xb7/0x150 [idpf]\n[12974.097373]  idpf_ptp_read_src_clk_reg+0xb7/0x150 [idpf]\n[12974.097391]  ? kthread_worker_fn+0x88/0x3d0\n[12974.097404]  ? kthread_worker_fn+0x4e/0x3d0\n[12974.097411]  idpf_ptp_update_cached_phctime+0x26/0x120 [idpf]\n[12974.097428]  ? _raw_spin_unlock_irq+0x28/0x50\n[12974.097436]  idpf_ptp_do_aux_work+0x15/0x20 [idpf]\n[12974.097454]  ptp_aux_kworker+0x20/0x40 [ptp]\n[12974.097464]  kthread_worker_fn+0xd5/0x3d0\n[12974.097474]  ? __pfx_kthread_worker_fn+0x10/0x10\n[12974.097482]  kthread+0xf4/0x130\n[12974.097489]  ? __pfx_kthread+0x10/0x10\n[12974.097498]  ret_from_fork+0x32c/0x410\n[12974.097512]  ? __pfx_kthread+0x10/0x10\n[12974.097519]  ret_from_fork_asm+0x1a/0x30\n[12974.097540]  </TASK>\n\nMove the call to spin_lock_init() up a bit to make sure read_dev_clk_lock\nis not touched before it's been initialized.","state":0,"publishedAt":"2026-07-19T15:40:48.461+00:00","modifiedAt":"2026-10-19T20:28:14.274+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/ethernet/intel/idpf/idpf_ptp.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5cb8805d2366b20ee4d7afff586d8acf17649330\",\n                            \"lessThan\": \"eb5991d4c8ba2e8153dfcda3e66a9608377b7dce\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5cb8805d2366b20ee4d7afff586d8acf17649330\",\n                            \"lessThan\": \"3122d70b7c0101d897fb795658a7b93f854935f2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5cb8805d2366b20ee4d7afff586d8acf17649330\",\n                            \"lessThan\": \"da4f76b6a84ede14a71282ef841768299ead0221\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/ethernet/intel/idpf/idpf_ptp.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.16\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.16\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.34\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0.11\",\n                            \"lessThanOrEqual\": \"7.0.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/eb5991d4c8ba2e8153dfcda3e66a9608377b7dce","https://git.kernel.org/stable/c/3122d70b7c0101d897fb795658a7b93f854935f2","https://git.kernel.org/stable/c/da4f76b6a84ede14a71282ef841768299ead0221"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64162","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-64162","identifiers":["CVE-2026-64162"]},"retained":false,"historicalAffected":[]}],"coverage":[]}