Resource exhaustion in Linux kernel - CVE-2026-97598
Published: September 28, 2026
Vulnerability identifier: #VU152607
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97598
CWE-ID: CWE-400
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 uncontrolled resource consumption in fib_empty_table() in IPv4 FIB rules when adding an IPv4 rule with automatic table assignment. A local user can populate table IDs and add a table-0 rule to cause a denial of service.
Only the IPv4 automatic table-assignment path is affected.
Affected software
Linux kernel
How to mitigate CVE-2026-97598
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3