bna: prevent IOC timer rearm during teardown
Summary
| CVE | CVE-2026-98544 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-18 16:17:06 UTC |
| Updated | 2026-10-30 13:21:15 UTC |
| Description | 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. |
Risk And Classification
EPSS: 0.002060000 probability, percentile 0.106240000 (date 2026-11-01)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 1d32f7696286eef9e5644eb57e79a36756274357 8160cd1ec527caedd36c36f948234e834cd086e6 git | Not specified |
| CNA | Linux | Linux | affected 1d32f7696286eef9e5644eb57e79a36756274357 3614582375fc4407e09ff42ff178a045e2fe6e8f git | Not specified |
| CNA | Linux | Linux | affected 1d32f7696286eef9e5644eb57e79a36756274357 f04cbdfac9b8284146995ab7ba0d054ad1d20ec6 git | Not specified |
| CNA | Linux | Linux | affected 1d32f7696286eef9e5644eb57e79a36756274357 28e32ace754b57534ef0ca0fb99bcbea5b13ba2a git | Not specified |
| CNA | Linux | Linux | affected 1d32f7696286eef9e5644eb57e79a36756274357 4d97a141e85a034566c33c7ed854c8a3e8a268f1 git | Not specified |
| CNA | Linux | Linux | affected 1d32f7696286eef9e5644eb57e79a36756274357 e09d1c6729ee4a7812128902d9274ff565f958b8 git | Not specified |
| CNA | Linux | Linux | affected 1d32f7696286eef9e5644eb57e79a36756274357 77b1718e39e5c9f6956fb60807326af20baf889d git | Not specified |
| CNA | Linux | Linux | affected 2.6.38 | Not specified |
| CNA | Linux | Linux | unaffected 2.6.38 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.224 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.191 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.160 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.112 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.55 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2.9 7.2.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.3 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/77b1718e39e5c9f6956fb60807326af20baf889d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/f04cbdfac9b8284146995ab7ba0d054ad1d20ec6 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/3614582375fc4407e09ff42ff178a045e2fe6e8f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/8160cd1ec527caedd36c36f948234e834cd086e6 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/e09d1c6729ee4a7812128902d9274ff565f958b8 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/28e32ace754b57534ef0ca0fb99bcbea5b13ba2a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/4d97a141e85a034566c33c7ed854c8a3e8a268f1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.