NULL pointer dereference in Linux kernel - CVE-2026-98098
Published: September 28, 2026
Vulnerability identifier: #VU152361
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98098
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a NULL pointer dereference in tipc_named_node_up() when processing node state publications after the local publication limit is reached. A local user can bind a large number of local-scope service addresses to sockets to cause a denial of service.
Subscribers to node or link up/down events may stop receiving notifications.
Affected software
Linux kernel
How to mitigate CVE-2026-98098
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3