From: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@xxxxxxxxxxxxx>
commit 1cc4606d19e3710bfab3f6704b87ff9580493c69 upstream.
It looks like these checks were accidentally lost during the conversion to
fileattr API.
Fixes: 72227eac177d ("fuse: convert to fileattr")
Cc: <stable@xxxxxxxxxxxxxxx> # v5.13
Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@xxxxxxxxxxxxx>
Signed-off-by: Miklos Szeredi <mszeredi@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/fuse/ioctl.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/fs/fuse/ioctl.c
+++ b/fs/fuse/ioctl.c
@@ -419,6 +419,12 @@ static struct fuse_file *fuse_priv_ioctl
struct fuse_mount *fm = get_fuse_mount(inode);
bool isdir = S_ISDIR(inode->i_mode);
+ if (!fuse_allow_current_process(fm->fc))
+ return ERR_PTR(-EACCES);
+
+ if (fuse_is_bad(inode))
+ return ERR_PTR(-EIO);
+
if (!S_ISREG(inode->i_mode) && !isdir)
return ERR_PTR(-ENOTTY);
