CVE-2026-99185 (GCVE-0-2026-99185)
Vulnerability from cvelistv5
Published
2026-10-28 10:35
Modified
2026-10-28 10:35
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
firewire: core: fix race condition in split transaction handling
For a split transaction, either fw_core_handle_response() or
split_transaction_timeout_callback() may manipulate the same transaction
entry in the pending transaction list. The return value of timer_delete()
is used to determine which function handles the entry. If the transaction
is a split transaction and timer_delete() returns zero, the timeout
callback may already be running. In this case, the response handler must
leave the entry in the list for the timeout callback to remove.
A previous code refactoring broke this behavior, introducing a race
condition in which both functions could process the same transaction.
This could lead to a use-after-free on the transaction initiator side.
Fix the regression by ensuring that the response handler does not process
the transaction when timer_delete() returns zero. The timeout callback is
responsible for removing the entry from the pending transaction list.
References
Impacted products
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"containers": {
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"versions": [
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"version": "7.2.13",
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"status": "unaffected",
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"descriptions": [
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirewire: core: fix race condition in split transaction handling\n\nFor a split transaction, either fw_core_handle_response() or\nsplit_transaction_timeout_callback() may manipulate the same transaction\nentry in the pending transaction list. The return value of timer_delete()\nis used to determine which function handles the entry. If the transaction\nis a split transaction and timer_delete() returns zero, the timeout\ncallback may already be running. In this case, the response handler must\nleave the entry in the list for the timeout callback to remove.\n\nA previous code refactoring broke this behavior, introducing a race\ncondition in which both functions could process the same transaction.\nThis could lead to a use-after-free on the transaction initiator side.\n\nFix the regression by ensuring that the response handler does not process\nthe transaction when timer_delete() returns zero. The timeout callback is\nresponsible for removing the entry from the pending transaction list."
}
],
"providerMetadata": {
"dateUpdated": "2026-10-28T10:35:43.282Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"url": "https://git.kernel.org/stable/c/a8caee0e623ca5d56e829032f9ec073c09e4d224"
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{
"url": "https://git.kernel.org/stable/c/7f9f2d6abc40f79e802b4063859eda343043b85c"
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],
"title": "firewire: core: fix race condition in split transaction handling",
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"cveId": "CVE-2026-99185",
"datePublished": "2026-10-28T10:35:43.282Z",
"dateReserved": "2026-09-25T10:25:14.399Z",
"dateUpdated": "2026-10-28T10:35:43.282Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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