CVE-2026-98321
kernel: netfilter: nf_nat: unregister and release hooks on error
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 6, 2026
Updated · October 10, 2026
Description
A flaw was found in the Linux kernel's netfilter subsystem. When registering Network Address Translation (NAT) hooks, failure handling during entry insertion does not properly unregister and release allocated hooks. A local attacker could exploit this flaw to cause a memory leak, potentially leading to a Denial of Service (DoS) through system memory exhaustion.
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 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-772 · Missing Release of Resource after Effective Lifetime