HOMEVULNERABILITIESCVE-2023-2598
HIGH

CVE-2023-2598

CWE-416Published: June 1, 2023· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2023-2598 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

From a weakness classification perspective (CWE-416): Use-after-free vulnerabilities involve accessing memory after it has been freed, often enabling arbitrary code execution.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Linux1 product(s)
linux kernel
netapp1 product(s)
hci baseboard management controller
Source: NVD CPE · 6 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://security.netapp.com/advisory/ntap-20230703-0006/
ADVISORYhttps://www.openwall.com/lists/oss-security/2023/05/08/3
ADVISORYhttps://security.netapp.com/advisory/ntap-20230703-0006/
ADVISORYhttps://www.openwall.com/lists/oss-security/2023/05/08/3

All References (6)

→
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

Quick Facts

CVE IDCVE-2023-2598
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-416
CISA KEVNo
Affected2 vendor(s)
PublishedJun 1, 2023

Related CVEs (CWE-416)

CVE-2012-4218
10.0
CVE-2010-3252
10.0
CVE-2012-4212
10.0
CVE-2026-13782
10.0
CVE-2010-2302
10.0
CVE-2012-5137
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-2598 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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