Infinite loop in Linux kernel - CVE-2026-98123
Published: September 28, 2026
Vulnerability identifier: #VU152325
CSH Severity: Medium
CVSS v4: 6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98123
CWE-ID: CWE-835
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper parameter iteration in sctp_get_asconf_response() when processing a crafted ASCONF-ACK. A remote user can send an ASCONF-ACK containing an odd-length parameter that causes the parameter-processing loop to make no progress and spin in softirq context to cause a denial of service.
The association must have ADD-IP enabled and an outstanding ASCONF request.
Affected software
Linux kernel
How to mitigate CVE-2026-98123
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3