Bug 2536447 (CVE-2026-90166) - CVE-2026-90166 kernel: smb/server: fix null-ptr-deref in ksmbd_ipc_tree_connect_request()
Summary: CVE-2026-90166 kernel: smb/server: fix null-ptr-deref in ksmbd_ipc_tree_conne...
Keywords:
Status: NEW
Alias: CVE-2026-90166
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-17 17:56 UTC by OSIDB Bzimport
Modified: 2026-10-13 13:00 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


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Description OSIDB Bzimport 2026-09-17 17:56:18 UTC
In the Linux kernel, the following vulnerability has been resolved:

smb/server: fix null-ptr-deref in ksmbd_ipc_tree_connect_request()

See the procedure below:

  ksmbd_tree_conn_connect
    ksmbd_share_config_get
      share->name = kstrdup() // fail
      if (!test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) // false
      // do not check `share->name`
    ksmbd_ipc_tree_connect_request
      strlen(share->name) // null-ptr-deref


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