Memory leak in Linux kernel - CVE-2019-19059

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

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.

Linux kernel
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux Workstation
Ubuntu
Fedora
Traffix SDC
linux-azure (Ubuntu package)
linux-gcp (Ubuntu package)
linux-oracle-5.0 (Ubuntu package)
linux-oem-osp1 (Ubuntu package)
linux-gke-5.0 (Ubuntu package)
linux-aws-5.0 (Ubuntu package)
kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel

Install updates from vendor's website.

Linux kernel - update to 5.3.12
linux-azure (Ubuntu package) - update to 5.0.0-1035.37
linux-gcp (Ubuntu package) - update to 5.0.0-1033.34
linux-oracle-5.0 (Ubuntu package) - update to 5.0.0-1013.18
linux-oem-osp1 (Ubuntu package) - update to 5.0.0-1043.48
linux-gke-5.0 (Ubuntu package) - update to 5.0.0-1032.33
linux-aws-5.0 (Ubuntu package) - update to 5.0.0-1027.30
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

• https://github.com/torvalds/linux/commit/0f4f199443faca715523b0659aa536251d8b978f
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O3PSDE6PTOTVBK2YTKB2TFQP2SUBVSNF/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PY7LJMSPAGRIKABJPDKQDTXYW3L5RX2T/

• Multiple vulnerabilities in Linux kernel
• Memory leak in F5 Networks Traffix SDC
• Red Hat Enterprise Linux 7 update for kernel-rt
• Red Hat Enterprise Linux 7 update for kernel
• Fedora 31 update for kernel
• Fedora 30 update for kernel
• Ubuntu update for linux-aws-5.0, linux-azure, linux-gcp and more