Memory leak in Linux kernel - CVE-2019-19065

Vulnerability identifier: #VU24339

CSH Severity: Medium

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-19065

CWE-ID: CWE-401

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the sdma_init() function in drivers/infiniband/hw/hfi1/sdma.c in the Linux kernel before 5.3.9 allows attackers to cause a denial of service (memory consumption) by triggering rhashtable_init() failures. A local user can perform a denial of service attack.

Linux kernel
Ubuntu
linux-kvm (Ubuntu package)
linux-snapdragon (Ubuntu package)
linux-hwe (Ubuntu package)
linux-gcp (Ubuntu package)
linux (Ubuntu package)
linux-raspi2 (Ubuntu package)
linux-oem (Ubuntu package)
linux-aws (Ubuntu package)
linux-oracle (Ubuntu package)
linux-gke-4.15 (Ubuntu package)
linux-aws-hwe (Ubuntu package)

Install update from vendor's website.

Linux kernel - update to 5.3.9
linux-kvm (Ubuntu package) - update to 4.15.0-1051.51
linux-snapdragon (Ubuntu package) - update to 4.15.0-1069.76
linux-hwe (Ubuntu package) - update to 4.15.0-72.81~16.04.1
linux-gcp (Ubuntu package) - update to 4.15.0-1050.53
linux (Ubuntu package) - update to 4.15.0-72.81
linux-raspi2 (Ubuntu package) - update to 4.15.0-1052.56
linux-oem (Ubuntu package) - update to 4.15.0-1065.75
linux-aws (Ubuntu package) - update to 4.15.0-1056.58
linux-oracle (Ubuntu package) - addressed in versions 4.15.0-1030.33~16.04.1, 4.15.0-1030.33
linux-gke-4.15 (Ubuntu package) - update to 4.15.0-1049.52
linux-aws-hwe (Ubuntu package) - update to 4.15.0-1056.58~16.04.1

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.9
• https://github.com/torvalds/linux/commit/34b3be18a04ecdc610aae4c48e5d1b799d8689f6

• Multiple vulnerabilities in Linux kernel
• Ubuntu update for linux, linux-aws, linux-aws-hwe and more