CVE-2026-98544 (GCVE-0-2026-98544)
Vulnerability from cvelistv5 – Published: 2026-10-18 15:18 – Updated: 2026-10-21 12:55
VLAI
EPSS
VEX
Title
bna: prevent IOC timer rearm during teardown
Summary
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
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
1d32f7696286eef9e5644eb57e79a36756274357 , < f04cbdfac9b8284146995ab7ba0d054ad1d20ec6
(git)
Affected: 1d32f7696286eef9e5644eb57e79a36756274357 , < 28e32ace754b57534ef0ca0fb99bcbea5b13ba2a (git) Affected: 1d32f7696286eef9e5644eb57e79a36756274357 , < 4d97a141e85a034566c33c7ed854c8a3e8a268f1 (git) Affected: 1d32f7696286eef9e5644eb57e79a36756274357 , < e09d1c6729ee4a7812128902d9274ff565f958b8 (git) Affected: 1d32f7696286eef9e5644eb57e79a36756274357 , < 77b1718e39e5c9f6956fb60807326af20baf889d (git) |
guessed | |
| Linux | Linux |
Affected:
2.6.38
Unaffected: 0 , < 2.6.38 (semver) Unaffected: 6.6.160 , ≤ 6.6.* (semver) Unaffected: 6.12.112 , ≤ 6.12.* (semver) Unaffected: 6.18.55 , ≤ 6.18.* (semver) Unaffected: 7.2.9 , ≤ 7.2.* (semver) Unaffected: 7.3 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/ethernet/brocade/bna/bnad.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "f04cbdfac9b8284146995ab7ba0d054ad1d20ec6",
"status": "affected",
"version": "1d32f7696286eef9e5644eb57e79a36756274357",
"versionType": "git"
},
{
"lessThan": "28e32ace754b57534ef0ca0fb99bcbea5b13ba2a",
"status": "affected",
"version": "1d32f7696286eef9e5644eb57e79a36756274357",
"versionType": "git"
},
{
"lessThan": "4d97a141e85a034566c33c7ed854c8a3e8a268f1",
"status": "affected",
"version": "1d32f7696286eef9e5644eb57e79a36756274357",
"versionType": "git"
},
{
"lessThan": "e09d1c6729ee4a7812128902d9274ff565f958b8",
"status": "affected",
"version": "1d32f7696286eef9e5644eb57e79a36756274357",
"versionType": "git"
},
{
"lessThan": "77b1718e39e5c9f6956fb60807326af20baf889d",
"status": "affected",
"version": "1d32f7696286eef9e5644eb57e79a36756274357",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/net/ethernet/brocade/bna/bnad.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.38"
},
{
"lessThan": "2.6.38",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.55",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.9",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.160",
"versionStartIncluding": "2.6.38",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.112",
"versionStartIncluding": "2.6.38",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.55",
"versionStartIncluding": "2.6.38",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2.9",
"versionStartIncluding": "2.6.38",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.3",
"versionStartIncluding": "2.6.38",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"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-\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."
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T12:55:20.477Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/f04cbdfac9b8284146995ab7ba0d054ad1d20ec6"
},
{
"url": "https://git.kernel.org/stable/c/28e32ace754b57534ef0ca0fb99bcbea5b13ba2a"
},
{
"url": "https://git.kernel.org/stable/c/4d97a141e85a034566c33c7ed854c8a3e8a268f1"
},
{
"url": "https://git.kernel.org/stable/c/e09d1c6729ee4a7812128902d9274ff565f958b8"
},
{
"url": "https://git.kernel.org/stable/c/77b1718e39e5c9f6956fb60807326af20baf889d"
}
],
"title": "bna: prevent IOC timer rearm during teardown",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-98544",
"datePublished": "2026-10-18T15:18:12.964Z",
"dateReserved": "2026-09-25T10:25:14.356Z",
"dateUpdated": "2026-10-21T12:55:20.477Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-98544",
"date": "2026-10-22",
"epss": "0.002",
"percentile": "0.09301"
},
"microsoft_vex": {
"current_release_date": "2026-10-21T18:39:19.000Z",
"cve": "CVE-2026-98544",
"id": "msrc_CVE-2026-98544",
"initial_release_date": "2026-10-20T01:03:41.000Z",
"product_status:known_affected": "1",
"product_status:under_investigation": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "bna: prevent IOC timer rearm during teardown",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-98544.json",
"version": "2"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/ethernet/brocade/bna/bnad.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
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"versionType": "git"
},
{
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"status": "affected",
"version": "1d32f7696286eef9e5644eb57e79a36756274357",
"versionType": "git"
},
{
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"versionType": "git"
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"status": "affected",
"version": "1d32f7696286eef9e5644eb57e79a36756274357",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/net/ethernet/brocade/bna/bnad.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.38"
},
{
"lessThan": "2.6.38",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.55",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.9",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"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-\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."
}
],
"id": "CVE-2026-98544",
"lastModified": "2026-10-21T13:21:32.617",
"metrics": {},
"published": "2026-10-18T16:17:06.300",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/28e32ace754b57534ef0ca0fb99bcbea5b13ba2a"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/4d97a141e85a034566c33c7ed854c8a3e8a268f1"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/77b1718e39e5c9f6956fb60807326af20baf889d"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/e09d1c6729ee4a7812128902d9274ff565f958b8"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/f04cbdfac9b8284146995ab7ba0d054ad1d20ec6"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-10-19T23:41:17+00:00",
"cve": "CVE-2026-98544",
"id": "CVE-2026-98544",
"initial_release_date": "2026-10-18T00:00:00+00:00",
"product_status:known_affected": "28",
"product_status:known_not_affected": "249",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: bna: prevent IOC timer rearm during teardown",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98544.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-10-22T16:37:07Z",
"cve": "CVE-2026-98544",
"id": "CVE-2026-98544",
"initial_release_date": "2026-10-22T16:37:07Z",
"product_status:known_affected": "318",
"product_status:known_not_affected": "30",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-98544",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-98544.json",
"version": "2"
}
}
}
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