CVE-2026-90152

Summary

In the Linux kernel, the following vulnerability has been resolved:

smb/server: fix session leak in ksmbd_session_register()

See the procedure below:

smb2_sess_setup ksmbd_smb2_session_create __session_create atomic_set(&sess->refcnt, 2) hash_add(sessions_table, &sess->hlist, sess->id) ksmbd_session_register xa_store(&conn->sessions, sess->id, sess) // fail ksmbd_user_session_put atomic_dec(&sess->refcnt) // refcnt is 1, session is not freed

Remove the session from sessions_table and drop its table reference if xa_store() fails.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxf5c779b7ddbda30866cf2a27c63e34158f858c73 < 03a22a003f41b182245e6c71fe565e277cff7094affected
LinuxLinuxf5c779b7ddbda30866cf2a27c63e34158f858c73 < b967a595fb735d313a8676b2ca6a4cba38506482affected
LinuxLinuxf5c779b7ddbda30866cf2a27c63e34158f858c73 < 55c677619084f9c9fa4146d933cc8ccafc924c87affected
LinuxLinuxf5c779b7ddbda30866cf2a27c63e34158f858c73 < 99b25b046e47e4904373cfeb445c5483f1633d88affected
LinuxLinux708c304b583d789957399dd8237f212cf8ad1e4daffected
LinuxLinuxf623f627ad2b1dc215ab3b0df53fb05cfd3a1c3baffected
LinuxLinuxd270631c21e68fb8016d6e231d022d7023a2df6faffected
LinuxLinux02f41d88f15d6b7d523e52cc3f87488f57e9265baffected
LinuxLinux5.15.145 < 5.16affected
LinuxLinux6.1.29 < 6.2affected
LinuxLinux6.2.16 < 6.3affected
LinuxLinux6.3.2 < 6.4affected
LinuxLinux6.4affected
LinuxLinux0 < 6.4unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References