diff options
| author | Namjae Jeon <linkinjeon@kernel.org> | 2023-05-03 01:38:33 +0200 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2023-05-04 06:03:01 +0200 |
| commit | 3ac00a2ab69b34189942afa9e862d5170cdcb018 (patch) | |
| tree | 6518967ea73fdaf2bf8fecd279fc5975f48a72d4 /fs | |
| parent | ksmbd: fix memleak in session setup (diff) | |
| download | linux-3ac00a2ab69b34189942afa9e862d5170cdcb018.tar.xz linux-3ac00a2ab69b34189942afa9e862d5170cdcb018.zip | |
ksmbd: fix NULL pointer dereference in smb2_get_info_filesystem()
If share is , share->path is NULL and it cause NULL pointer
dereference issue.
Cc: stable@vger.kernel.org
Reported-by: zdi-disclosures@trendmicro.com # ZDI-CAN-20479
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ksmbd/smb2pdu.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c index 1d3931994a5d..b5f1a2a7389d 100644 --- a/fs/ksmbd/smb2pdu.c +++ b/fs/ksmbd/smb2pdu.c @@ -4885,6 +4885,9 @@ static int smb2_get_info_filesystem(struct ksmbd_work *work, int rc = 0, len; int fs_infoclass_size = 0; + if (!share->path) + return -EIO; + rc = kern_path(share->path, LOOKUP_NO_SYMLINKS, &path); if (rc) { pr_err("cannot create vfs path\n"); |