UnratedFix available
wifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task Watchdog task might end between send_sig() and kthread_stop() calls, what results in the use-after-free issue. Fix this by increasing watchdog task reference count before calling send_sig() and dropping it by switching to kthread_stop_put().
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.259, 5.15.210, 6.1.176, 6.12.88, 6.18.30, 6.6.140, 7.0.7
- CVEs
- CVE-2026-46180
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 18:39 UTC · Revision 1
Source evidence
wifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task
core-osv · Original sourcePublished 28 May 2026, 09:36 UTC
In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task Watchdog task might end between send_sig() and kthread_stop() calls, what results in the use-after-free issue. Fix this by increasing watchdog task reference count before calling send_sig() and dropping it by switching to kthread_stop_put().
osv:CVE-2026-46180
Kernel
Fixed versions: 5.10.259, 5.15.210, 6.1.176, 6.6.140, 6.12.88, 6.18.30, 7.0.7
Complete source record
{
"id": "6ac123a4d4cce8e6715dd6cbac9cc5978fa5986cda36e61318e9cc4729c775de",
"url": "https://osv.dev/vulnerability/CVE-2026-46180",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "wifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task",
"summary": "In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task Watchdog task might end between send_sig() and kthread_stop() calls, what results in the use-after-free issue. Fix this by increasing watchdog task reference count before calling send_sig() and dropping it by switching to kthread_stop_put().",
"evidence": "osv:CVE-2026-46180",
"products": [
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{
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"severity": "unknown",
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"aliases": [
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{
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"events": [
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"package": {
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"ecosystem": "Linux"
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"database_specific": {
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],
"modified": "2026-10-28T02:30:51.493836325Z",
"provider": "osv",
"references": [
"https://cert-portal.siemens.com/productcert/html/ssa-784472.html",
"https://git.kernel.org/stable/c/658d2e46c2e9a8eb9b80c5e803ce3c89885b3366",
"https://git.kernel.org/stable/c/908b92231e1ded53e43fcfad5e0704d83e1b803c",
"https://git.kernel.org/stable/c/a21f735fb1017ef89c6f9dbf4d799513b4e7bd5a",
"https://git.kernel.org/stable/c/c623b63580880cc742255eaed3d79804c1b91143",
"https://git.kernel.org/stable/c/d16827cb1d3936f7627d0da6044483f743ebde03",
"https://git.kernel.org/stable/c/d616bb10de79e5c2bd8a24230a1128aeaf715615",
"https://git.kernel.org/stable/c/df2e90d6a9955510f24f1dada78cfc439fd9fa88",
"https://git.kernel.org/stable/c/ed4168d1a50fef5be8eca947fbbf05a28507d265",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46180.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-46180",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46180.json"
}
},
"related_cves": [
{
"value": "CVE-2026-46180",
"evidence": "/id"
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],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 520114,
"published_at": "2026-05-28T09:36:33.904+00:00"
}