CVE-2026-99273

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reserve space for the UTF-16 terminator in stream info smb_strtoUTF16() always writes a terminating zero UTF-16 unit after the converted characters, but get_file_stream_info() budgets only sizeof(struct smb2_file_stream_info) + streamlen * 2 for a stream entry and sizeof(struct smb2_file_stream_info) + 7 * 2 for the trailing "::$DATA" entry. When an entry exactly fills the 448-byte small response buffer, the terminator is written two bytes past the allocation. Reserve one extra UTF-16 unit in both budget checks. The terminator is not part of the wire format, so the reported lengths are unchanged.

• https://git.kernel.org/stable/c/06a751809ebd33e95b05bf733697318a17a4872b
• https://git.kernel.org/stable/c/0e64f89563164719ceb1aa33f2a8bfd6391fa340
• https://git.kernel.org/stable/c/583ede545a14f275a959772b5e1e50fe3e14b861
• https://git.kernel.org/stable/c/a025c4991a7d83edc4dd339e3ea86d8ff6226eca