An issue was discovered in the Linux kernel through 4.17.10. There is a NULL pointer dereference in fscrypt_do_page_crypto() in fs/crypto/crypto.c when operating on a file in a corrupted f2fs image.Referenceshttps://bugzilla.kernel.org/show_bug.cgi?id=200465http://www.securityfocus.com/bid/104917https://lists.debian.org/debian-lts-announce/2019/03/msg00017.htmlhttps://usn.ubuntu.com/3932-1/https://usn.ubuntu.com/3932-2/https://usn.ubuntu.com/4094-1/https://usn.ubuntu.com/4118-1/