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b2dd7b953c
linux/fs/ntfs3
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Dan Carpenter b2dd7b953c
fs/ntfs3: Fix an NULL dereference bug 
The issue here is when this is called from ntfs_load_attr_list().  The
"size" comes from le32_to_cpu(attr->res.data_size) so it can't overflow
on a 64bit systems but on 32bit systems the "+ 1023" can overflow and
the result is zero.  This means that the kmalloc will succeed by
returning the ZERO_SIZE_PTR and then the memcpy() will crash with an
Oops on the next line.

Fixes: be71b5cba2 ("fs/ntfs3: Add attrib operations")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2024-01-29 12:05:08 +03:00
..
lib fs/ntfs3: Add missing header and guards to lib/ headers 2021-09-13 19:41:44 +03:00
attrib.c fs/ntfs3: Use i_size_read and i_size_write 2024-01-29 10:48:33 +03:00
attrlist.c fs/ntfs3: Use kvfree to free memory allocated by kvmalloc 2024-01-16 11:31:56 +03:00
bitfunc.c fs/ntfs3: Add ntfs_bitmap_weight_le function and refactoring 2022-11-14 19:50:42 +03:00
bitmap.c fs/ntfs3: Use kvfree to free memory allocated by kvmalloc 2024-01-16 11:31:56 +03:00
debug.h fs/ntfs3. Add forward declarations for structs to debug.h 2021-09-13 19:41:43 +03:00
dir.c fs/ntfs3: Use i_size_read and i_size_write 2024-01-29 10:48:33 +03:00
file.c fs/ntfs3: Update inode->i_size after success write into compressed file 2024-01-29 10:48:35 +03:00
frecord.c fs/ntfs3: Use i_size_read and i_size_write 2024-01-29 10:48:33 +03:00
fslog.c fs/ntfs3: Correct function is_rst_area_valid 2024-01-29 10:48:34 +03:00
fsntfs.c fs/ntfs3: Prevent generic message "attempt to access beyond end of device" 2024-01-29 10:48:33 +03:00
index.c fs/ntfs3: Use i_size_read and i_size_write 2024-01-29 10:48:33 +03:00
inode.c fs/ntfs3: Use i_size_read and i_size_write 2024-01-29 10:48:33 +03:00
Kconfig fs: add CONFIG_BUFFER_HEAD 2023-08-02 09:13:09 -06:00
lznt.c fs/ntfs3: Code formatting 2023-07-03 00:21:27 +04:00
Makefile
namei.c fs/ntfs3: Implement super_operations::shutdown 2023-12-06 17:46:14 +03:00
ntfs_fs.h fs/ntfs3: Fix an NULL dereference bug 2024-01-29 12:05:08 +03:00
ntfs.h fs/ntfs3: Disable ATTR_LIST_ENTRY size check 2023-12-21 14:25:40 +03:00
record.c fs/ntfs3: Fixed overflow check in mi_enum_attr() 2024-01-29 10:48:34 +03:00
run.c fs/ntfs3: Code formatting 2023-07-03 00:21:27 +04:00
super.c fs/ntfs3: Use kvfree to free memory allocated by kvmalloc 2024-01-16 11:31:56 +03:00
upcase.c fs/ntfs3: Add option "nocase" 2022-09-30 17:39:47 +03:00
xattr.c fs/ntfs3: Implement super_operations::shutdown 2023-12-06 17:46:14 +03:00