Use-after-free in Linux kernel - CVE-2019-19524

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Main Vulnerability Database Vulnerabilities #VU24171

Use-after-free in Linux kernel - CVE-2019-19524

Published: January 9, 2020


Vulnerability identifier: #VU24171
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-19524
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to use-after-free error in the drivers/input/ff-memless.c driver. A local user can use a malicious USB device to trigger use-after-free error and execute arbitrary code on the system with elevated privileges.


Affected software

Linux kernel
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power 9
Red Hat Enterprise Linux for IBM System z (Structure A)
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for ARM 64
Slackware Linux
kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel-alt (Red Hat package)
RSA Authentication Manager

How to mitigate CVE-2019-19524

Install update from vendor's website.

Linux kernel - update to 5.3.12
kernel (Red Hat package) - addressed in versions 3.10.0-1160.el7, 4.18.0-240.el8
kernel-rt (Red Hat package) - update to 3.10.0-1160.rt56.1131.el7
kernel-alt (Red Hat package) - update to 4.14.0-115.21.2.el7a
RSA Authentication Manager - update to 8.4 Patch 10

External References

Related Security Bulletins