Memory leak in Linux kernel - CVE-2019-19059

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Main Vulnerability Database Vulnerabilities #VU23025

Memory leak in Linux kernel - CVE-2019-19059

Published: November 27, 2019 / Updated: May 21, 2020


Vulnerability identifier: #VU23025
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-19059
CWE-ID: CWE-401
Exploitation vector: Adjecent network
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the "iwl_pcie_ctxt_info_gen3_init()" function in "drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c" file. A remote attacker on the local network can cause a denial of service condition (memory consumption) by triggering "iwl_pcie_init_fw_sec() or dma_alloc_coherent()" failures.


Affected software

Linux kernel
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux Workstation
Fedora
Traffix SDC
kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel

How to mitigate CVE-2019-19059

Install updates from vendor's website.

Linux kernel - update to 5.3.12
kernel (Red Hat package) - update to 3.10.0-1160.el7
kernel-rt (Red Hat package) - update to 3.10.0-1160.rt56.1131.el7
kernel - addressed in versions 5.3.12-200.fc30, 5.3.12-300.fc31

External References

Related Security Bulletins