What is CVE-2023-2236?

CVE-2023-2236 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2023-05-01.

How severe is CVE-2023-2236?

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

Use After Free in Linux Kernel

CVE-2023-2236

A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Both io_install_fixed_file and its callers call fput in a file in case of an error, causing a reference underflo…

Vulnerability class: Use-After-Free

EPSS: 0.000 (10.9th 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 5.19

Weakness classification (CWE)

CWE-416 — Use After Free

References

git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (patch)
kernel.dance/9d94c04c0db024922e886c9fd429659f22f48ea4
security.netapp.com/advisory/ntap-20230601-0010/

Frequently asked questions

What is CVE-2023-2236?: CVE-2023-2236 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2023-05-01.
How severe is CVE-2023-2236?: High severity. CVSS v3 base score is 7.8 out of 10.