PT-2019-6310 · Linux+2 · Linux Kernel+2

Alexander Bergmann · Published 2019-09-09 · Updated 2026-03-13 · CVE-2019-16230

Positive Technologies (AI Summary)

CVSS v3.1

4.7

Medium

Base vector

AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel version 5.2.14

Description The issue is related to a NULL pointer dereference in the Linux kernel, specifically in the radeon display driver. This occurs because the alloc workqueue return value is not checked, potentially leading to a crash. It is noted that the work queue allocation happens during device initialization, which for a graphics card, occurs during boot, and is not attacker controllable. Additionally, it is mentioned that exploitation of this issue could allow a local attacker to cause a denial of service.

Recommendations For Linux kernel version 5.2.14, consider applying a patch that checks the return value of alloc workqueue to prevent NULL pointer dereferences. As a temporary workaround, ensure that the system has sufficient resources during boot to minimize the likelihood of out-of-memory conditions.

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALT-PU-2019-2700

BDU:2023-00699

CVE-2019-16230

ECHO-5202-6F49-ACEC

Affected Products

Alt Linux

Debian

Linux Kernel

References · 17

• https://wiki.astralinux.ru/astra-linux-se16-bulletin-20241017SE16 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-16230 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-16230 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-16230 · Vendor Advisory
• https://lkml.org/lkml/2019/9/9/487 · Patch
• https://bdu.fstec.ru/vul/2023-00699 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-12-CVE-2019-16230 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-16230 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-16230 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-16230 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-13-CVE-2019-16230 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-16230 · Vendor Advisory
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16230 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=1760450 · Note
• https://bugzilla.suse.com/show_bug.cgi?id=1150468 · Note