CVE-2023-4921 (High) detected in linuxlinux-4.19.239, linuxlinux-4.19.239 - autoclosed

[mend-bolt-for-github[bot]]

CVE-2023-4921 - High Severity Vulnerability

Vulnerable Libraries - linuxlinux-4.19.239, linuxlinux-4.19.239

Vulnerability Details

A use-after-free vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation. When the plug qdisc is used as a class of the qfq qdisc, sending network packets triggers use-after-free in qfq_dequeue() due to the incorrect .peek handler of sch_plug and lack of error checking in agg_dequeue(). We recommend upgrading past commit 8fc134fee27f2263988ae38920bc03da416b03d8.

Publish Date: 2023-09-12

URL: CVE-2023-4921

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-2023-4921

Release Date: 2023-09-12

Fix Resolution: v4.14.326,v4.19.295,v5.4.257,v5.10.195,v5.15.132,v6.1.54,v6.6-rc1

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[mend-bolt-for-github[bot]]

: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.