| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.15 108/244] fs/ntfs3: Fix missing i_op in ntfs_read_mft | Date | Tue, 23 Aug 2022 10:24:27 +0200 |
| |
From: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
commit 37a530bfe56ca9a0d3129598803f2794c7428aae upstream.
There is null pointer dereference because i_op == NULL. The bug happens because we don't initialize i_op for records in $Extend. Fixes: 82cae269cfa9 ("fs/ntfs3: Add initialization of super block")
Reported-by: Liangbin Lian <jjm2473@gmail.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- fs/ntfs3/inode.c | 1 + 1 file changed, 1 insertion(+)
--- a/fs/ntfs3/inode.c +++ b/fs/ntfs3/inode.c @@ -430,6 +430,7 @@ end_enum: } else if (fname && fname->home.low == cpu_to_le32(MFT_REC_EXTEND) && fname->home.seq == cpu_to_le16(MFT_REC_EXTEND)) { /* Records in $Extend are not a files or general directories. */ + inode->i_op = &ntfs_file_inode_operations; } else { err = -EINVAL; goto out;
|