CVE-2023-3776

Updated: 2025-02-13 22:53:05.456736

Description:

A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability. We recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.


Links NIST CIRCL RHEL Ubuntu

Severity

Severity Score
CVSS Version 2.x 0
CVSS Version 3.x HIGH 7.8

Status

OS name Project name Version Score Severity Status Errata Last updated

Statement

AlmaLinux 9.2 ESU kernel 5.14.0 7.8 HIGH Already Fixed 2024-01-19 10:10:36
AlmaLinux 9.2 FIPS kernel 5.14.0 7.8 HIGH Released CLSA-2024:1710164161 2024-03-11 09:55:12
CentOS 6 ELS kernel 2.6.32 7.8 HIGH Released CLSA-2024:1705494430 2024-02-05 08:32:17
CentOS 7 ELS kernel 3.10.0 7.8 HIGH Already Fixed 2024-03-16 04:43:28
CentOS 8.4 ELS kernel 4.18.0 7.8 HIGH Released CLSA-2023:1693426883 2023-08-30 17:06:29
CentOS 8.5 ELS kernel 4.18.0 7.8 HIGH Released CLSA-2023:1693424916 2023-08-30 17:06:29
CloudLinux 6 ELS kernel 2.6.32 7.8 HIGH Ignored 2024-10-09 04:14:59
Oracle Linux 6 ELS kernel 2.6.32 7.8 HIGH Released CLSA-2024:1705496067 2024-01-17 08:44:42
Ubuntu 16.04 ELS linux-hwe 4.15.0 7.8 HIGH Released CLSA-2023:1693329914 2023-08-29 14:08:45
Ubuntu 16.04 ELS linux 4.4.0 7.8 HIGH Released CLSA-2023:1693333574 2023-08-29 17:06:33
Total: 11