What is CVE-2023-0468?

CVE-2023-0468 is a medium-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 4.7/10. Published 2023-01-26.

How severe is CVE-2023-0468?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Use After Free in Linux Kernel

CVE-2023-0468

A use-after-free flaw was found in io_uring/poll.c in io_poll_check_events in the io_uring subcomponent in the Linux Kernel due to a race condition of poll_refs. This flaw may cause a NULL pointer dereference.

Vulnerability class: Use-After-Free

EPSS: 0.003 (20.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux Linux_kernel — versions 6.1
N/a Kernel — versions Linux Kernel prior to Kernel 6.1 RC7

Weakness classification (CWE)

CWE-416 — Use After Free

References

secalert@redhat.com (Exploit, Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2023-0468?: CVE-2023-0468 is a medium-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 4.7/10. Published 2023-01-26.
How severe is CVE-2023-0468?: Medium severity. CVSS v3 base score is 4.7 out of 10.