NetSight
IP …
high7.8

CVE-2023-3777

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.

Impact

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. When nf_tables_delrule() is flushing table rules, it is not checked whether the chain is bound and the chain's owner rule can also release the objects in certain circumstances. We recommend upgrading past commit 6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 5.9 before 5.10.188
from 5.11 before 5.15.123
from 5.16 before 6.1.42
from 6.2 before 6.4.7
DebianDebian Linux
Version 12.0
CanonicalUbuntu Linux
Versions 14.04, 16.04, 18.04, 20.04, 22.04

Weakness classification

CWE-416

References