CVE-2024-42269

netfilter: iptables: Fix potential null-ptr-deref in ip6table_nat_table_init().

Published Aug 17, 2024 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Description

In the Linux kernel, the following vulnerability has been resolved:

netfilter: iptables: Fix potential null-ptr-deref in ip6table_nat_table_init().

ip6table_nat_table_init() accesses net->gen->ptr[ip6table_nat_net_ops.id],
but the function is exposed to user space before the entry is allocated
via register_pernet_subsys().

Let's call register_pernet_subsys() before xt_register_template().

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`fdacd57c79b79a03c7ca88f706ad9fb7b46831c1`	affected	< 419ee6274c5153b89c4393c1946faa4c3cad4f9e
`fdacd57c79b79a03c7ca88f706ad9fb7b46831c1`	affected	< 91b6df6611b7edb28676c4f63f90c56c30d3e601
`fdacd57c79b79a03c7ca88f706ad9fb7b46831c1`	affected	< e85b9b6a87be4cb3710082038b677e97f2389003
`fdacd57c79b79a03c7ca88f706ad9fb7b46831c1`	affected	< 87dba44e9471b79b255d0736858a897332db9226
`fdacd57c79b79a03c7ca88f706ad9fb7b46831c1`	affected	< c22921df777de5606f1047b1345b8d22ef1c0b34

Linux

affected

Version	Status	Constraints
`5.15`	affected	—
`0`	unaffected	< 5.15
`5.15.165`	unaffected	≤ 5.15.*
`6.1.104`	unaffected	≤ 6.1.*
`6.6.45`	unaffected	≤ 6.6.*
`6.10.4`	unaffected	≤ 6.10.*
`6.11`	unaffected	≤ *

Configuration 1 [-]

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.11:rc1::::::

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

Source	ID	Title
Debian DLA	DLA-4008-1	linux-6.1 security update
Ubuntu USN	USN-7100-1	Linux kernel vulnerabilities
Ubuntu USN	USN-7100-2	Linux kernel vulnerabilities
Ubuntu USN	USN-7123-1	Linux kernel (Azure) vulnerabilities
Ubuntu USN	USN-7144-1	Linux kernel (Intel IoTG) vulnerabilities
Ubuntu USN	USN-7154-1	Linux kernel vulnerabilities
Ubuntu USN	USN-7155-1	Linux kernel (NVIDIA) vulnerabilities
Ubuntu USN	USN-7156-1	Linux kernel (GKE) vulnerabilities
Ubuntu USN	USN-7154-2	Linux kernel (HWE) vulnerabilities
Ubuntu USN	USN-7194-1	Linux kernel (Azure) vulnerabilities
Ubuntu USN	USN-7196-1	Linux kernel (Azure) vulnerabilities

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.226% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://git.kernel.org/stable/c/419ee6274c5153b89c4393c1946faa4c3cad4f9e
https://git.kernel.org/stable/c/87dba44e9471b79b255d0736858a897332db9226
https://git.kernel.org/stable/c/91b6df6611b7edb28676c4f63f90c56c30d3e601
https://git.kernel.org/stable/c/c22921df777de5606f1047b1345b8d22ef1c0b34
https://git.kernel.org/stable/c/e85b9b6a87be4cb3710082038b677e97f2389003
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
https://lore.kernel.org/linux-cve-announce/2024081739-CVE-2024-42269-7d0a@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2024-42269
https://www.cve.org/CVERecord?id=CVE-2024-42269

History

Nov 3, 2025 10:30 PM Added references View changes

Type	Values Removed	Values Added
References		https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Sep 11, 2024 1:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Aug 19, 2024 9:15 PM First appearance in the feed. Weaknesses updated. Affected versions updated. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Linux Linux linux Kernel
Weaknesses		CWE-476
CPEs		cpe:2.3:o:linux:linux_kernel:::::::: cpe:2.3:o:linux:linux_kernel:6.11:rc1::::::
Vendors & Products		Linux Linux linux Kernel

Aug 19, 2024 7:15 PM Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
References		https://lore.kernel.org/linux-cve-announce/2024081739-CVE-2024-42269-7d0a@gregkh/T https://nvd.nist.gov/vuln/detail/CVE-2024-42269 https://www.cve.org/CVERecord?id=CVE-2024-42269
Metrics	threat_severity `None`	cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}` threat_severity `Moderate`

Aug 19, 2024 4:45 AM Added references View changes

Type	Values Removed	Values Added
References		https://git.kernel.org/stable/c/419ee6274c5153b89c4393c1946faa4c3cad4f9e

Aug 17, 2024 9:00 AM Description updated. Title updated. Added references View changes

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: netfilter: iptables: Fix potential null-ptr-deref in ip6table_nat_table_init(). ip6table_nat_table_init() accesses net->gen->ptr[ip6table_nat_net_ops.id], but the function is exposed to user space before the entry is allocated via register_pernet_subsys(). Let's call register_pernet_subsys() before xt_register_template().
Title		netfilter: iptables: Fix potential null-ptr-deref in ip6table_nat_table_init().
References		https://git.kernel.org/stable/c/87dba44e9471b79b255d0736858a897332db9226 https://git.kernel.org/stable/c/91b6df6611b7edb28676c4f63f90c56c30d3e601 https://git.kernel.org/stable/c/c22921df777de5606f1047b1345b8d22ef1c0b34 https://git.kernel.org/stable/c/e85b9b6a87be4cb3710082038b677e97f2389003