CVE-2026-99128
kernel: kernel: Denial of Service via improper SCTP chunk length validation
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 28, 2026
Updated · October 30, 2026
Description
A flaw was found in the Linux kernel's Stream Control Transmission Protocol (SCTP) subsystem. A remote attacker can exploit this vulnerability to cause a Denial of Service (DoS) by sending specially crafted network packets with invalid chunk lengths. Because the packet parser fails to properly validate declared chunk lengths, the packet receiver repeatedly processes the malformed chunk in an infinite loop, resulting in a system soft lockup.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')