PT-2019-4412 · Linux+2 · Linux Kernel+2

Published 2019-09-12 · Updated 2023-01-17 · CVE-2019-19079

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.3

Description The issue is related to a memory leak in the qrtr tun write iter() function, which can lead to uncontrolled resource consumption. This can be exploited by a remote attacker to cause a denial of service, specifically through memory consumption.

Recommendations For Linux kernel versions prior to 5.3, update to version 5.3 or later to resolve the issue. As a temporary workaround, consider restricting access to the qrtr tun write iter() function to minimize the risk of exploitation.

Fix

DoS

Memory Leak

Resource Exhaustion

Weakness Enumeration

CWE-401

CWE-400

Related Identifiers

ALT-PU-2019-2838

ALT-PU-2019-2842

ALT-PU-2019-2891

ALT-PU-2019-3292

ALT-PU-2019-3326

ALT-PU-2020-1024

ALT-PU-2020-1714

ALT-PU-2020-2410

ALT-PU-2020-2433

BDU:2020-00155

CVE-2019-19079

USN-4258-1

Affected Products

Alt Linux

Linux Kernel

Ubuntu

References · 31

• https://github.com/torvalds/linux/commit/a21b7f0cff1906a93a0130b74713b15a0b36481d · Patch
• https://ubuntu.com/security/CVE-2019-19227 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-15099 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-18683 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19082 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4258-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-18885 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19078 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-19079 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19767 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-19079 · Security Note
• https://ubuntu.com/security/CVE-2019-19079 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-15291 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-19079 · Vendor Advisory
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3 · Vendor Advisory