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| author | Paulo Alcantara <pc@manguebit.com> | 2023-12-05 21:49:29 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-12-13 18:18:17 +0100 |
| commit | d99376b70247394b39307051f994060a085a417e (patch) | |
| tree | a1c7855c1b6b7c4b78cdc6f07505a4e039b30858 /drivers/base/devcoredump.c | |
| parent | ab5813bb20711a8e3493b152e50b3dda3aed5858 (diff) | |
smb: client: fix potential NULL deref in parse_dfs_referrals()
[ Upstream commit 92414333eb375ed64f4ae92d34d579e826936480 ]
If server returned no data for FSCTL_DFS_GET_REFERRALS, @dfs_rsp will
remain NULL and then parse_dfs_referrals() will dereference it.
Fix this by returning -EIO when no output data is returned.
Besides, we can't fix it in SMB2_ioctl() as some FSCTLs are allowed to
return no data as per MS-SMB2 2.2.32.
Fixes: 9d49640a21bf ("CIFS: implement get_dfs_refer for SMB2+")
Cc: stable@vger.kernel.org
Reported-by: Robert Morris <rtm@csail.mit.edu>
Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/base/devcoredump.c')
0 files changed, 0 insertions, 0 deletions