What’s Vulnerable › Vulnerabilities

CVE-2023-2598

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-06-01 · updated 2026-06-17
• Weakness: CWE-416

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.

Affected products

• Linux kernel: from 6.3 before 6.3.2 — fixed in 6.3.2
• NetApp Hci Baseboard Management Controller: h300s, h410c, h410s, h500s, h700s

How to fix

Upgrade to a fixed version: Linux kernel 6.3.2. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2024/04/24/3
• https://security.netapp.com/advisory/ntap-20230703-0006/
• https://www.openwall.com/lists/oss-security/2023/05/08/3
• http://www.openwall.com/lists/oss-security/2024/04/24/3
• https://security.netapp.com/advisory/ntap-20230703-0006/
• https://www.openwall.com/lists/oss-security/2023/05/08/3

Get alerted when CVE-2023-2598 or the next vulnerability affects your stack