3 Commits

Author	SHA1	Message	Date
Savva Mitrofanov	7413548584	Ext4Pkg: Fix global buffer overflow in Ext4ReadDir ... Directory entry structure can contain name_len bigger than size of "." or "..", that's why CompareMem in such cases leads to global buffer overflow. So there are two problems. The first is that statement doesn't check cases when name_len != 0 but > 2 and the second is that we passing big Length to CompareMem routine. The correct way here is to check that name_len <= 2 and check for null-terminator presence Signed-off-by: Savva Mitrofanov <savvamtr@gmail.com>	2022-12-07 14:48:00 +06:00
Savva Mitrofanov	0c1c5a6ce1	Ext4Pkg: Fix memory leak in Ext4RetrieveDirent ... We need to free buffer on return if BlockRemainder != 0. Also changed return logic from function to use use common exit to prevent code duplication. Signed-off-by: Savva Mitrofanov <savvamtr@gmail.com>	2022-12-07 14:47:58 +06:00
Savva Mitrofanov	03362e6d6f	Ext4Pkg: Add EDK II Ext4 package ... Adds a Pedro Falcato's UEFI EXT4 filesystem driver that implements the EFI_FILE_PROTOCOL and EFI_SIMPLE_FILE_SYSTEM_PROTOCOL. Signed-off-by: Savva Mitrofanov <savvamtr@gmail.com>	2022-12-07 14:47:55 +06:00