Memory leak in Linux kernel - CVE-2019-3459

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Main Vulnerability Database Vulnerabilities #VU17762

Memory leak in Linux kernel - CVE-2019-3459

Published: February 19, 2019


Vulnerability identifier: #VU17762
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-3459
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local attacker to obtain potentially sensitive information on the target system.

The vulnerability exists due heap address infoleak in use of l2cap_get_conf_opt. A local attacker can trigger memory leak and access important data.


Affected software

Linux kernel
Amazon Linux AMI
Red Hat Enterprise Linux for IBM System z (Structure A)
Red Hat Enterprise Linux for Power 9
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for Real Time
Opensuse
Fedora

kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel-alt (Red Hat package)
kernel
kernel-headers
Red Hat Virtualization Host

How to mitigate CVE-2019-3459

Install updates from vendor's website.

kernel (Red Hat package) - update to 3.10.0-1062.el7
kernel-rt (Red Hat package) - addressed in versions 3.10.0-1062.rt56.1022.el7, 4.18.0-147.rt24.93.el8
kernel-alt (Red Hat package) - update to 4.14.0-115.18.1.el7a
kernel - addressed in versions 4.19.15-200.fc28, 4.19.15-300.fc29
kernel-headers - addressed in versions 4.19.15-200.fc28, 4.19.15-300.fc29

External References

Related Security Bulletins