CVE-2026-98544
Full vulnerability record from the local CVENow database.
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.
Severity
Not scored
CVSS score
Not available
Vulnerability status
Received
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-10-18 16:17:06.300000
Last modified
2026-10-30 13:21:15.817000
View original CVE JSON
{
"id": "CVE-2026-98544",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-10-18T16:17:06.300",
"lastModified": "2026-10-30T13:21:15.817",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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->bna_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."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/net/ethernet/brocade/bna/bnad.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "1d32f7696286eef9e5644eb57e79a36756274357",
"lessThan": "8160cd1ec527caedd36c36f948234e834cd086e6",
"versionType": "git",
"status": "affected"
},
{
"version": "1d32f7696286eef9e5644eb57e79a36756274357",
"lessThan": "3614582375fc4407e09ff42ff178a045e2fe6e8f",
"versionType": "git",
"status": "affected"
},
{
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"versionType": "git",
"status": "affected"
},
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"status": "affected"
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"lessThan": "4d97a141e85a034566c33c7ed854c8a3e8a268f1",
"versionType": "git",
"status": "affected"
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{
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"lessThan": "e09d1c6729ee4a7812128902d9274ff565f958b8",
"versionType": "git",
"status": "affected"
},
{
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"lessThan": "77b1718e39e5c9f6956fb60807326af20baf889d",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"drivers/net/ethernet/brocade/bna/bnad.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "2.6.38",
"status": "affected"
},
{
"version": "0",
"lessThan": "2.6.38",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.224",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.191",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.160",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.112",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.55",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.2.9",
"lessThanOrEqual": "7.2.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.3",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {},
"references": [
{
"url": "https://git.kernel.org/stable/c/28e32ace754b57534ef0ca0fb99bcbea5b13ba2a",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
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},
{
"url": "https://git.kernel.org/stable/c/4d97a141e85a034566c33c7ed854c8a3e8a268f1",
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{
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{
"url": "https://git.kernel.org/stable/c/8160cd1ec527caedd36c36f948234e834cd086e6",
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{
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
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}