Linux Kernel Netlink-based Wireless Configuration Integer Overflow Local Privilege Escalation Vulnerability
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 high-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the parsing of rnr elements. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. 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://github.com/torvalds/linux/commit/4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1
Disclosure Timeline
- 2026-06-25 - Vulnerability reported to vendor
- 2026-09-14 - Coordinated public release of advisory
- 2026-09-14 - Advisory Updated
Credit
Mark H
