[PATCH AUTOSEL 6.6 05/17] fs/ntfs3: Add rough attr alloc_size check

From: Konstantin Komarov almaz.alexandrovich@paragon-software.com

[ Upstream commit c4a8ba334262e9a5c158d618a4820e1b9c12495c ]

Reported-by: syzbot+c6d94bedd910a8216d25@syzkaller.appspotmail.com Signed-off-by: Konstantin Komarov almaz.alexandrovich@paragon-software.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ntfs3/record.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/fs/ntfs3/record.c b/fs/ntfs3/record.c index 2a375247b3c09..427c71be0f087 100644 --- a/fs/ntfs3/record.c +++ b/fs/ntfs3/record.c @@ -331,6 +331,9 @@ struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr)

if (attr->nres.c_unit) return NULL; + + if (alloc_size > mi->sbi->volume.size) + return NULL; }

return attr;