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| author | Dan Carpenter <dan.carpenter@linaro.org> | 2023-10-17 17:04:39 +0300 |
|---|---|---|
| committer | Konstantin Komarov <almaz.alexandrovich@paragon-software.com> | 2024-01-29 12:05:08 +0300 |
| commit | b2dd7b953c25ffd5912dda17e980e7168bebcf6c (patch) | |
| tree | 107fedcb46e7744f06a0e26a57f8a917f0b8ba39 /fs/ntfs3/file.c | |
| parent | d68968440b1a75dee05cfac7f368f1aa139e1911 (diff) | |
| download | linux-b2dd7b953c25ffd5912dda17e980e7168bebcf6c.tar.xz | |
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: be71b5cba2e6 ("fs/ntfs3: Add attrib operations")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Diffstat (limited to 'fs/ntfs3/file.c')
0 files changed, 0 insertions, 0 deletions