CVE-2026-23228 PUBLISHED

smb: server: fix leak of active_num_conn in ksmbd_tcp_new_connection()

Assigner: Linux
Reserved: 13.01.2026 Published: 18.02.2026 Updated: 18.02.2026

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

smb: server: fix leak of active_num_conn in ksmbd_tcp_new_connection()

On kthread_run() failure in ksmbd_tcp_new_connection(), the transport is freed via free_transport(), which does not decrement active_num_conn, leaking this counter.

Replace free_transport() with ksmbd_tcp_disconnect().

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 787769c8cc50416af7b8b1a36e6bcd6aaa7680aa (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to baf664fc90a6139a39a58333e4aaa390c10d45dc (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to cd25e0d809531a67e9dd53b19012d27d2b13425f (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 599271110c35f6b16e2e4e45b9fbd47ed378c982 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • unaffected from 6.6.125 to 6.6.* (incl.)
  • unaffected from 6.12.72 to 6.12.* (incl.)
  • unaffected from 6.18.11 to 6.18.* (incl.)
  • unaffected from 6.19.1 to 6.19.* (incl.)

References