CVE-2023-2598

Name: CVE-2023-2598
Creator: NVD / NIST
Published: 2023-06-01T01:15:17.867+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.37%

Last modified Jun 17, 2026

CVE-2023-2598 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A flaw was found in the fixed buffer registration code for io_uring (io_sqe_buffer_register in io_uring/rsrc.c) in the Linux kernel that allows out-of-bounds access to physical memory beyond the end of the buffer. This flaw enables full local privilege escalation.. EPSS estimates a 1.37% chance of exploitation in the next 30 days.

Description

A flaw was found in the fixed buffer registration code for io_uring (io_sqe_buffer_register in io_uring/rsrc.c) in the Linux kernel that allows out-of-bounds access to physical memory beyond the end of the buffer. This flaw enables full local privilege escalation.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.37%

68.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 6.3, < 6.3.2
Netapp	Hci Baseboard Management Controller	h300s
Netapp	Hci Baseboard Management Controller	h410c
Netapp	Hci Baseboard Management Controller	h410s
Netapp	Hci Baseboard Management Controller	h500s
Netapp	Hci Baseboard Management Controller	h700s

References

http://www.openwall.com/lists/oss-security/2024/04/24/3
https://security.netapp.com/advisory/ntap-20230703-0006/Third Party Advisory
https://www.openwall.com/lists/oss-security/2023/05/08/3Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2024/04/24/3
https://security.netapp.com/advisory/ntap-20230703-0006/Third Party Advisory
https://www.openwall.com/lists/oss-security/2023/05/08/3Mailing List, Third Party Advisory

Timeline

Published: Jun 1, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-2598?

How severe is CVE-2023-2598?

CVE-2023-2598 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.37% probability of exploitation in the next 30 days.

How do I fix CVE-2023-2598?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-2598?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST