mirror of
https://github.com/openwrt/openwrt.git
synced 2026-07-20 16:11:59 +04:00
Anna Kiri
2818ac5ccd
After malloc(erasesize) in mtd_check(), the result was never checked for NULL. On allocation failure, the buf pointer remained NULL and would later be used in image_check() via read(imagefd, buf + buflen, ...), causing a NULL pointer dereference. Add a NULL check after the allocation and return early. The early return path also closes the just-opened fd and frees the strdup'd colon-separated device-list copy to avoid leaks. Signed-off-by: Anna Kiri <bredcorn@gmail.com> Link: https://github.com/openwrt/openwrt/pull/23705 Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>