Select your cookie preferences

We use cookies and similar tools to enhance your experience, provide our services, deliver relevant advertising, and make improvements. Approved third parties also use these tools to help us deliver advertising and provide certain site features.

CVE-2023-4244

Public on 2023-09-06
Modified on 2024-03-01
Description

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.

Severity
Important
See what this means
CVSS v3 Base Score
7.0
See breakdown
Continue reading

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 kernel 2023-09-27 22:15 ALAS-2023-1838
Amazon Linux 2 - Core kernel 2023-09-27 22:48 ALAS2-2023-2264
Amazon Linux 2 - Kernel-5.10 Extra kernel 2023-10-31 00:17 ALAS2KERNEL-5.10-2023-042
Amazon Linux 2 - Kernel-5.15 Extra kernel 2023-10-12 17:29 ALAS2KERNEL-5.15-2023-028
Amazon Linux 2 - Kernel-5.4 Extra kernel 2024-01-03 23:00 ALAS2KERNEL-5.4-2024-057
Amazon Linux 2023 kernel 2023-10-12 16:11 ALAS2023-2023-385

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD CVSSv3 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H