mirror of
https://github.com/openwrt/openwrt.git
synced 2026-10-12 19:57:41 +04:00
Andrea Pesaresi
cfbfca7ee7
Linux 6.18.46 included stable commit 29dbb4e29e1f ("ksmbd: Fix
to handle removal of rfc1002 header from smb_hdr"), a backport of
upstream commit 0a70cac78967.
The upstream change depends on SMB1 header refactoring that removed the
RFC1002 length field from struct smb_hdr. Those prerequisites are not
present in 6.18.y, where struct smb_hdr still contains smb_buf_length.
Consequently, smb_get_msg() advances the buffer by four bytes before
it is cast to a structure that already includes the RFC1002 field. This
creates a four-byte offset mismatch while parsing and constructing the
initial SMB1 multi-protocol negotiate response. Windows clients receive
a malformed response and abort the connection.
Apply the revert provided by ksmbd maintainer Namjae Jeon to restore
consistent SMB1 buffer handling in 6.18.y.
Drop this patch with the kernel bump that includes the stable revert.
Fixes: 87e5289908 ("kernel: bump 6.18 to 6.18.46")
Link: https://git.kernel.org/torvalds/c/83bfbd0bb9025f98fa62b44f93bd67466773d1db
Link: https://git.kernel.org/torvalds/c/0a70cac7896712a08e3cd22c16f44be976d40dbf
Tested-by: Andrea Pesaresi <andreapesaresi82@gmail.com>
Tested-on: GL.iNet GL-MT3000
Signed-off-by: Andrea Pesaresi <andreapesaresi82@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/25271
Signed-off-by: Robert Marko <robimarko@gmail.com>