A use-after-free flaw was found in net/sched/cls_fw.c in classifiers (cls_fw, cls_u32, and cls_route) in the Linux Kernel. This flaw allows a local attacker to perform a local privilege escalation due to incorrect handling of the existing filter, leading to a kernel information leak issue.
:heavy_check_mark: This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.
CVE-2023-4128 - High Severity Vulnerability
Vulnerable Library - linux-yoctov5.4.51
Yocto Linux Embedded kernel
Library home page: https://git.yoctoproject.org/git/linux-yocto
Found in HEAD commit: f1b7c617b9b8f4135ab2f75a0c407cc44d43683f
Found in base branch: master
Vulnerable Source Files (2)
/net/sched/cls_u32.c /net/sched/cls_u32.c
Vulnerability Details
A use-after-free flaw was found in net/sched/cls_fw.c in classifiers (cls_fw, cls_u32, and cls_route) in the Linux Kernel. This flaw allows a local attacker to perform a local privilege escalation due to incorrect handling of the existing filter, leading to a kernel information leak issue.
Publish Date: 2023-08-10
URL: CVE-2023-4128
CVSS 3 Score Details (7.8)
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Local - Attack Complexity: Low - Privileges Required: Low - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: High - Integrity Impact: High - Availability Impact: High
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: https://www.linuxkernelcves.com/cves/CVE-2023-4128
Release Date: 2023-08-10
Fix Resolution: v4.14.322,v4.19.291,v5.4.253,v5.10.190,v5.15.126,v6.1.45,v6.4.10,v6.5-rc5
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