Use After Free in Linux Kernel

CVE-2023-32233

In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.

Vulnerability class: Use-After-Free

EPSS: 0.130 (96.1th 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

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-32233?
CVE-2023-32233 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2023-05-08.
How severe is CVE-2023-32233?
High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2023-32233 known to be exploited?
52 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.