Linux kernel is vulnerable to a heap-based buffer overflow in the fs/ext4/xattr.c:ext4_xattr_set_entry() function. An attacker could exploit this by operating on a mounted crafted ext4 image.Referenceshttps://usn.ubuntu.com/3752-2/https://usn.ubuntu.com/3752-3/https://access.redhat.com/errata/RHSA-2019:0162https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10840http://www.securityfocus.com/bid/104858https://usn.ubuntu.com/3752-1/