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CVE-2022-48912

kernel: netfilter: fix use-after-free in __nf_register_net_hook()

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Severity

Moderate

Red Hat Product Security

6.7

CVSS 3.1

Review impact separately from score.

Published · August 22, 2024

Updated · October 29, 2026

Description

A possible use-after-free was found in the Linux kernel in __nf_register_net_hook().

Statement

This issue is fixed in RHEL-9.1 and above (including 8.10):

in (rhel-8.7, rhel-8.8, rhel-8.9, rhel-8.10) netfilter: fix use-after-free in __nf_register_net_hook()
in (rhel-9.1, rhel-9.2, rhel-9.3, rhel-9.4, rhel-9.5) netfilter: fix use-after-free in __nf_register_net_hook()

Please note that while RHEL-9 kernel-rt still appears as affected, it has been fixed in the same RHSA as RHEL-9 kernel. This is because from RHEL-9.3 onwards, the kernel and kernel-rt fixes are bundled together in a single errata.

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 · 6.7
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CWE-416 · Use After Free