CVE-2023-3777

Severity CVSS v4.0:

Pending analysis

Type:

CWE-416 Use After Free

Publication date:

06/09/2023

Last modified:

20/03/2025

Description

A use-after-free vulnerability in the Linux kernel&#39;s netfilter: nf_tables component can be exploited to achieve local privilege escalation.<br /> <br /> When nf_tables_delrule() is flushing table rules, it is not checked whether the chain is bound and the chain&#39;s owner rule can also release the objects in certain circumstances.<br /> <br /> We recommend upgrading past commit 6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

7.80

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	5.9 (including)	5.10.188 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.123 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	6.1.42 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.4.7 (excluding)
cpe:2.3:o:debian:debian_linux:12.0:::::::*
cpe:2.3:o:canonical:ubuntu_linux:14.04::::esm:::
cpe:2.3:o:canonical:ubuntu_linux:16.04::::esm:::
cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::
cpe:2.3:o:canonical:ubuntu_linux:20.04::::lts:::
cpe:2.3:o:canonical:ubuntu_linux:22.04::::lts:::

To consult the complete list of CPE names with products and versions, see this page

CVE-2023-3777

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools