CVE-2026-98544bna: prevent IOC timer rearm during teardown
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: bna: prevent IOC timer rearm during teardown bna: prevent IOC timer rearm during teardown bnad_pci_remove() and the probe disable_ioceth path call timer_delete_sync() for ioc_timer, sem_timer and hb_timer, but not for iocpf_timer. bnad_iocpf_timeout() then takes bnad->bna_lock after free_netdev() has freed the struct bnad. Deleting iocpf_timer last does not fix this. sem_timer and iocpf_timer rearm each other: bnad_iocpf_sem_timeout() can arm iocpf_timer, and bnad_iocpf_timeout() arms sem_timer from bfa_ioc_hw_sem_get() when the semaphore is busy. timer_delete_sync() only waits out its own callback. bnad_ioceth_disable() can time out and leave that callback live. Shut all four IOC timers down with timer_shutdown_sync() on both paths, so a later mod_timer() is ignored. This issue was identified during our ongoing static-analysis research while reviewing kernel code.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 18, 2026
- First seen by InfoSec Signals
- Oct 18, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1d32f7696286eef9e5644eb57e79a36756274357 before 28e32ace754b57534ef0ca0fb99bcbea5b13ba2a; from 1d32f7696286eef9e5644eb57e79a36756274357 before 4d97a141e85a034566c33c7ed854c8a3e8a268f1; from 1d32f7696286eef9e5644eb57e79a36756274357 before e09d1c6729ee4a7812128902d9274ff565f958b8; from 1d32f7696286eef9e5644eb57e79a36756274357 before 77b1718e39e5c9f6956fb60807326af20baf889d | CNA record |
References
- https://git.kernel.org/stable/c/28e32ace754b57534ef0ca0fb99bcbea5b13ba2a
- https://git.kernel.org/stable/c/4d97a141e85a034566c33c7ed854c8a3e8a268f1
- https://git.kernel.org/stable/c/e09d1c6729ee4a7812128902d9274ff565f958b8
- https://git.kernel.org/stable/c/77b1718e39e5c9f6956fb60807326af20baf889d
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.