Advisory Details

April 13th, 2023

Linux Kernel netdevsim Improper Update of Reference Count Denial-of-Service Vulnerability

ZDI-23-442
ZDI-CAN-17811

CVE ID CVE-2023-2019
CVSS SCORE 5.3, AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H
AFFECTED VENDORS Linux
AFFECTED PRODUCTS Kernel
VULNERABILITY DETAILS

This vulnerability allows local attackers to create a denial-of-service condition on affected installations of Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the scheduling of events. The issue results from the improper management of a reference count. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

ADDITIONAL DETAILS Linux has issued an update to correct this vulnerability. More details can be found at:
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=180a6a3ee60a
DISCLOSURE TIMELINE
  • 2022-07-19 - Vulnerability reported to vendor
  • 2023-04-13 - Coordinated public release of advisory
CREDIT Lucas Leong (@_wmliang_) of Trend Micro Zero Day Initiative
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