Linux Kernel SCTP Subsystem Race Condition Local Privilege Escalation Vulnerability

November 13th, 2026
ZDI-26-1001 ZDI-CAN-32927

CVE ID

CVE-2026-98130

CVSS Score

7.8 AV:L/AC:H/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 handling of sctp_association objects. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to escalate privileges and execute 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/2188569e7e1b0bc3f3b557dc97ab7a02befc11c8

Disclosure Timeline

  • 2026-08-25 - Vulnerability reported to vendor
  • 2026-11-13 - Coordinated public release of advisory
  • 2026-11-13 - Advisory Updated

Credit

Nico Yip (@_cyeaa_)

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