PT-2019-4211 · Linux+2 · Linux Kernel+2

Published 2019-10-04 · Updated 2021-06-22 · CVE-2019-19069

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 5.3.9

Description The issue is related to a memory leak in the fastrpc dma buf attach() function, which can cause a denial of service due to memory consumption. This can be triggered by causing dma get sgtable() failures. The vulnerability can be exploited by a remote attacker to cause a denial of service.

Recommendations For Linux kernel versions prior to 5.3.9, update to version 5.3.9 or later to resolve the issue. As a temporary workaround, consider restricting access to the fastrpc dma buf attach() function until a patch is available.

Fix

DoS

Memory Leak

Resource Exhaustion

Weakness Enumeration

CWE-401

CWE-400

Related Identifiers

ALT-PU-2019-3113

ALT-PU-2019-3136

ALT-PU-2019-3184

ALT-PU-2020-1421

ALT-PU-2020-1450

ALT-PU-2020-1714

BDU:2019-04808

CVE-2019-19069

USN-4208-1

Affected Products

Alt Linux

Linux Kernel

Ubuntu

References · 29

• https://github.com/torvalds/linux/commit/fc739a058d99c9297ef6bfd923b809d85855b9a9 · Patch
• https://usn.ubuntu.com/4208-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19069 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-04808 · Security Note
• https://ubuntu.com/security/notices/USN-4208-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19065 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4208-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19061 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-19069 · Security Note
• https://ubuntu.com/security/CVE-2019-19083 · Vendor Advisory
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.9 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-17075 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-17133 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-19069 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-19069 · Vendor Advisory