What is CVE-2023-4207?

CVE-2023-4207 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2023-09-06.

How severe is CVE-2023-4207?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2023-4207 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Use After Free in Linux Kernel

CVE-2023-4207

A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation. When fw_change() is called on an existing filter, the whole tcf_result struct is always copied into t…

Vulnerability class: Use-After-Free

EPSS: 0.000 (7.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux Kernel — versions 3.18

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-4207?: CVE-2023-4207 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2023-09-06.
How severe is CVE-2023-4207?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2023-4207 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.