Use-after-free in Linux kernel - CVE-2019-19527

Vulnerability identifier: #VU26648

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-2019-19527

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to use-after-free error in the drivers/hid/usbhid/hiddev.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.

Linux kernel
CentOS
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for ARM 64
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
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
kernel (Red Hat package)
kernel-rt (Red Hat package)
IBM MQ Appliance
Data Computing Appliance (DCA)
4769 Developer's Toolkit
RSA Authentication Manager

Install update from vendor's website.

Linux kernel - update to 5.2.10
kernel (Red Hat package) - addressed in versions 3.10.0-1062.36.1.el7, 3.10.0-1127.18.2.el7, 4.18.0-147.8.1.el8_1
kernel-rt (Red Hat package) - addressed in versions 3.10.0-1127.18.2.rt56.1116.el7, 4.18.0-147.8.1.rt24.101.el8_1
IBM MQ Appliance - update to 9.2.0.6
Data Computing Appliance (DCA) - update to 4.2.0.0
4769 Developer's Toolkit - update to 7.3.44
RSA Authentication Manager - update to 8.4 Patch 10

• http://www.openwall.com/lists/oss-security/2019/12/03/4
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.10
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6d4472d7bec39917b54e4e80245784ea5d60ce49
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9c09b214f30e3c11f9b0b03f89442df03643794d
• https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
• https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html

• Privilege escalation in Linux kernel USB driver
• Red Hat Enterprise Linux 8 update for kernel-rt
• Red Hat Enterprise Linux 7 update for kernel-rt
• Red Hat Enterprise Linux 7 update for kernel
• CentOS 7 update for kernel
• Red Hat Enterprise Linux 7.7 update for kernel
• Multiple vulnerabilities in IBM MQ Appliance
• Multiple vulnerabilities in Dell EMC Data Computing Appliance (DCA)
• Red Hat Enterprise Linux 8 update for kernel
• Multiple vulnerabiities in IBM 4769 Developer's Toolkit
• RSA Authentication Manager update for third-party components