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| author | Steve French <stfrench@microsoft.com> | 2025-02-16 22:17:54 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-03-13 13:01:40 +0100 |
| commit | f2e8f906f9ed5529283f8c139859efc7bff4f2ef (patch) | |
| tree | 981f8004d801fefb0142fabeadfc8a7210db5090 /rust/helpers/err.c | |
| parent | c011482fb5fa867350aaad506d1455b34c1c2e42 (diff) | |
smb311: failure to open files of length 1040 when mounting with SMB3.1.1 POSIX extensions
[ Upstream commit 9df23801c83d3e12b4c09be39d37d2be385e52f9 ]
If a file size has bits 0x410 = ATTR_DIRECTORY | ATTR_REPARSE set
then during queryinfo (stat) the file is regarded as a directory
and subsequent opens can fail. A simple test example is trying
to open any file 1040 bytes long when mounting with "posix"
(SMB3.1.1 POSIX/Linux Extensions).
The cause of this bug is that Attributes field in smb2_file_all_info
struct occupies the same place that EndOfFile field in
smb311_posix_qinfo, and sometimes the latter struct is incorrectly
processed as if it was the first one.
Reported-by: Oleh Nykyforchyn <oleh.nyk@gmail.com>
Tested-by: Oleh Nykyforchyn <oleh.nyk@gmail.com>
Acked-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
Cc: stable@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'rust/helpers/err.c')
0 files changed, 0 insertions, 0 deletions