Bug 2546454 (CVE-2026-98321) - CVE-2026-98321 kernel: netfilter: nf_nat: unregister and release hooks on error
Summary: CVE-2026-98321 kernel: netfilter: nf_nat: unregister and release hooks on error
Keywords:
Status: NEW
Alias: CVE-2026-98321
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-06 09:23 UTC by OSIDB Bzimport
Modified: 2026-10-10 06:44 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-10-06 09:23:16 UTC 
In the Linux kernel, the following vulnerability has been resolved:

netfilter: nf_nat: unregister and release hooks on error

If nf_hook_entries_insert_raw() fails, the NAT hooks get never released,
resulting in a memleak.

Postpone setting nat_proto_net->nat_hook_ops when the hooks are
registered to simplify the error path to decide whether the nat hooks
need unwinding.
Comment 1 gkamathe 2026-10-10 04:26:10 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98321.mbox
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