{"id":"CVE-2026-98544","summary":"bna: prevent IOC timer rearm during teardown","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbna: prevent IOC timer rearm during teardown\n\nbna: prevent IOC timer rearm during teardown\n\nbnad_pci_remove() and the probe disable_ioceth path call\ntimer_delete_sync() for ioc_timer, sem_timer and hb_timer, but not for\niocpf_timer.  bnad_iocpf_timeout() then takes bnad-\u003ebna_lock after\nfree_netdev() has freed the struct bnad.\n\nDeleting iocpf_timer last does not fix this.  sem_timer and\niocpf_timer rearm each other: bnad_iocpf_sem_timeout() can arm\niocpf_timer, and bnad_iocpf_timeout() arms sem_timer from\nbfa_ioc_hw_sem_get() when the semaphore is busy.\ntimer_delete_sync() only waits out its own callback.\nbnad_ioceth_disable() can time out and leave that callback live.\n\nShut all four IOC timers down with timer_shutdown_sync() on both\npaths, so a later mod_timer() is ignored.\n\nThis issue was identified during our ongoing static-analysis research\nwhile reviewing kernel code.","modified":"2026-10-20T02:30:25.327537294Z","published":"2026-10-18T15:18:12.964Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98544.json"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/28e32ace754b57534ef0ca0fb99bcbea5b13ba2a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4d97a141e85a034566c33c7ed854c8a3e8a268f1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/77b1718e39e5c9f6956fb60807326af20baf889d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e09d1c6729ee4a7812128902d9274ff565f958b8"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98544.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98544"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"1d32f7696286eef9e5644eb57e79a36756274357"},{"fixed":"28e32ace754b57534ef0ca0fb99bcbea5b13ba2a"},{"fixed":"4d97a141e85a034566c33c7ed854c8a3e8a268f1"},{"fixed":"e09d1c6729ee4a7812128902d9274ff565f958b8"},{"fixed":"77b1718e39e5c9f6956fb60807326af20baf889d"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98544.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.38"},{"fixed":"6.12.112"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.55"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98544.json"}}],"schema_version":"1.9.0"}