CVE-2024-42269

2024-08-1700:00:00

ubuntu.com

linux kernel

netfilter

iptables

vulnerability

cve-2024-42269

fix

null-ptr-deref

ip6table_nat_table_init

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

7.2

Confidence

Low

JSON

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().

OSVersionArchitecturePackageVersionFilename
ubuntu22.04noarchlinux< anyUNKNOWN
ubuntu24.04noarchlinux< anyUNKNOWN
ubuntu22.04noarchlinux-aws< anyUNKNOWN
ubuntu24.04noarchlinux-aws< anyUNKNOWN
ubuntu20.04noarchlinux-aws-5.15< anyUNKNOWN
ubuntu22.04noarchlinux-azure< anyUNKNOWN
ubuntu24.04noarchlinux-azure< anyUNKNOWN
ubuntu20.04noarchlinux-azure-5.15< anyUNKNOWN
ubuntu22.04noarchlinux-azure-fde< anyUNKNOWN
ubuntu20.04noarchlinux-azure-fde-5.15< anyUNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	22.04	noarch	linux	< any	UNKNOWN
ubuntu	24.04	noarch	linux	< any	UNKNOWN
ubuntu	22.04	noarch	linux-aws	< any	UNKNOWN
ubuntu	24.04	noarch	linux-aws	< any	UNKNOWN
ubuntu	20.04	noarch	linux-aws-5.15	< any	UNKNOWN
ubuntu	22.04	noarch	linux-azure	< any	UNKNOWN
ubuntu	24.04	noarch	linux-azure	< any	UNKNOWN
ubuntu	20.04	noarch	linux-azure-5.15	< any	UNKNOWN
ubuntu	22.04	noarch	linux-azure-fde	< any	UNKNOWN
ubuntu	20.04	noarch	linux-azure-fde-5.15	< any	UNKNOWN