CVE-2026-23226
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: add chann_lock to protect ksmbd_chann_list xarray ksmbd_chann_list xarray lacks synchronization, allowing use-after-free in multi-channel sessions (between lookup_chann_list() and ksmbd_chann_del). Adds rw_semaphore chann_lock to struct ksmbd_session and protects all xa_load/xa_store/xa_erase accesses.
Severity
HIGH
CVSS score
7.8
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-02-18 16:22:32.363000
Last modified
2026-10-30 13:18:34.930000
View original CVE JSON
{
"id": "CVE-2026-23226",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-02-18T16:22:32.363",
"lastModified": "2026-10-30T13:18:34.930",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: add chann_lock to protect ksmbd_chann_list xarray\n\nksmbd_chann_list xarray lacks synchronization, allowing use-after-free in\nmulti-channel sessions (between lookup_chann_list() and ksmbd_chann_del).\n\nAdds rw_semaphore chann_lock to struct ksmbd_session and protects\nall xa_load/xa_store/xa_erase accesses."
},
{
"lang": "es",
"value": "Se ha resuelto la siguiente vulnerabilidad en el kernel de Linux:\n\nksmbd: añadir chann_lock para proteger ksmbd_chann_list xarray\n\nksmbd_chann_list xarray carece de sincronización, permitiendo uso después de liberación en sesiones multicanal (entre lookup_chann_list() y ksmbd_chann_del).\n\nAñade el semáforo rw_semaphore chann_lock a la estructura ksmbd_session y protege todos los accesos xa_load/xa_store/xa_erase."
}
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"source": "[email protected]",
"type": "Primary",
"description": [
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"value": "CWE-416"
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