Advisory Details

November 5th, 2024

Linux Kernel Net Scheduler ATM Queuing Discipline Use-After-Free Local Privilege Escalation Vulnerability

ZDI-24-1455
ZDI-CAN-23237

CVE ID
CVSS SCORE 8.8, AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
AFFECTED VENDORS Linux
AFFECTED PRODUCTS Kernel
VULNERABILITY DETAILS

This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the processing of traffic control. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel.

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/stable/linux.git/commit/?h=v6.1.113&id=09038f47e45cd5dbb02315db2134403a6b160ceb
DISCLOSURE TIMELINE
  • 2024-02-22 - Vulnerability reported to vendor
  • 2024-11-05 - Coordinated public release of advisory
  • 2024-11-05 - Advisory Updated
CREDIT Pumpkin (@u1f383) from DEVCORE Research Team
BACK TO ADVISORIES