CVE-2023-4244CWE-416

Use-after-free in Linux kernel's netfilter: nf_tables component

High · published September 6, 2023

CVSS v3.1
7.8
EPSS
0%
Percentile
14.3
In the wild
Unconfirmed
What it is

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

Due to a race condition between nf_tables netlink control plane transaction and nft_set element garbage collection, it is possible to underflow the reference counter causing a use-after-free vulnerability.

We recommend upgrading past commit 3e91b0ebd994635df2346353322ac51ce84ce6d8.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00241 · 14.3th percentile
Weakness
CWE-416 · Use After Free
Published
2023-09-06T13:53Z
EPSS history
Timeline
  • 06 SEP 13:53Z
    Use-after-free in Linux kernel's netfilter: nf_tables component
    cvelistv5