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linux/fs/smb
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Kees Cook 08f3ca17c1 smb: client: memcpy() with surrounding object base address 
[ Upstream commit f69b0187f8 ]

Like commit f1f047bd7c ("smb: client: Fix -Wstringop-overflow issues"),
adjust the memcpy() destination address to be based off the surrounding
object rather than based off the 4-byte "Protocol" member. This avoids a
build-time warning when compiling under CONFIG_FORTIFY_SOURCE with GCC 15:

In function 'fortify_memcpy_chk',
    inlined from 'CIFSSMBSetPathInfo' at ../fs/smb/client/cifssmb.c:5358:2:
../include/linux/fortify-string.h:571:25: error: call to '__write_overflow_field' declared with attribute warning: detected write beyond size of field (1st parameter); maybe use struct_group()? [-Werror=attribute-warning]
  571 |                         __write_overflow_field(p_size_field, size);
      |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Kees Cook <kees@kernel.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2024-12-14 19:54:47 +01:00
..
client smb: client: memcpy() with surrounding object base address 2024-12-14 19:54:47 +01:00
common ksmbd: return FILE_DEVICE_DISK instead of super magic 2024-07-25 09:49:19 +02:00
server ksmbd: fix Out-of-Bounds Write in ksmbd_vfs_stream_write 2024-12-14 19:54:32 +01:00
Kconfig smb: move client and server files to common directory fs/smb 2023-06-28 11:12:40 +02:00
Makefile smb: move client and server files to common directory fs/smb 2023-06-28 11:12:40 +02:00