mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-22 10:31:08 +00:00
ext4: disallow ea_inodes with extended attributes
commit 2bc7e7c1a3
upstream.
An ea_inode stores the value of an extended attribute; it can not have
extended attributes itself, or this will cause recursive nightmares.
Add a check in ext4_iget() to make sure this is the case.
Cc: stable@kernel.org
Reported-by: syzbot+e44749b6ba4d0434cd47@syzkaller.appspotmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Link: https://lore.kernel.org/r/20230524034951.779531-4-tytso@mit.edu
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
277cea6f77
commit
140aa33f96
1 changed files with 3 additions and 0 deletions
|
@ -4769,6 +4769,9 @@ static const char *check_igot_inode(struct inode *inode, ext4_iget_flags flags)
|
|||
if (flags & EXT4_IGET_EA_INODE) {
|
||||
if (!(EXT4_I(inode)->i_flags & EXT4_EA_INODE_FL))
|
||||
return "missing EA_INODE flag";
|
||||
if (ext4_test_inode_state(inode, EXT4_STATE_XATTR) ||
|
||||
EXT4_I(inode)->i_file_acl)
|
||||
return "ea_inode with extended attributes";
|
||||
} else {
|
||||
if ((EXT4_I(inode)->i_flags & EXT4_EA_INODE_FL))
|
||||
return "unexpected EA_INODE flag";
|
||||
|
|
Loading…
Reference in a new issue