Resource management error in Linux kernel - CVE-2019-19338

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Main Vulnerability Database Vulnerabilities #VU26406

Resource management error in Linux kernel - CVE-2019-19338

Published: March 26, 2020 / Updated: July 15, 2020


Vulnerability identifier: #VU26406
CSH Severity: Low
CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-19338
CWE-ID: CWE-399
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to incomplete fix for Transaction Asynchronous Abort (TAA) issue on certain Intel CPUs (CVE-2019-11135). A local user on a guest operating system can exploit this vulnerability to gain access to sensitive information.


Affected software

Linux kernel
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 for Real Time
Red Hat Enterprise Linux for Real Time for NFV
CentOS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Virtualization Host - Extended Update Support 4.2 for RHEL
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux Server - AUS
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
Slackware Linux
kernel (Red Hat package)
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
kernel-rt (Red Hat package)
Red Hat Virtualization Host

How to mitigate CVE-2019-19338

Install updates from vendor's website.

Linux kernel - addressed in versions 4.4.207, 4.9.207, 4.14.159, 4.19.89, 5.3.16, 5.4.3
kernel (Red Hat package) - addressed in versions 3.10.0-957.48.1.el7, 3.10.0-1062.18.1.el7, 4.18.0-147.5.1.el8_1
kernel-rt (Red Hat package) - addressed in versions 3.10.0-1062.18.1.rt56.1044.el7, 4.18.0-147.5.1.rt24.98.el8_1

External References

Related Security Bulletins