CVE-2019-19768: Linux Kernel

High severity, CVSS 7.5. EPSS: 4.2% chance of exploitation in the next 30 days.

In the Linux kernel 5.4.0-rc2, there is a use-after-free (read) in the __blk_add_trace function in kernel/trace/blktrace.c (which is used to fill out a blk_io_trace structure and place it in a per-cpu sub-buffer).

Affected products

• Linux Linux Kernel: version 5.4.0 only

Published 2019-12-12. Last modified 2026-06-17.