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authorNamjae Jeon2023-05-03 08:38:33 +0900
committerSteve French2023-05-03 23:03:01 -0500
commit3ac00a2ab69b34189942afa9e862d5170cdcb018 (patch)
tree6518967ea73fdaf2bf8fecd279fc5975f48a72d4
parent6d7cb549c2ca20e1f07593f15e936fd54b763028 (diff)
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>
-rw-r--r--fs/ksmbd/smb2pdu.c3
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");