CVE-2018-10840: Canonical Ubuntu Linux

Medium severity, CVSS 6.6. EPSS: 0.7% chance of exploitation in the next 30 days.

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.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 18.04 only
• Linux Linux Kernel: affected versions not specified
• Red Hat Enterprise Linux: version 7.0 only

Published 2018-07-16. Last modified 2026-06-17.