High severity · published Jun 1, 2023
CVE-2023-2598
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…
7.8
CVSS
1.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 72% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
6.3 before 6.3.2 · source: NVD
HB
Hci Baseboard Management Controller · Netapp
h300s; h410c; h410s; h500s; h700s · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-2598
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-2598
www.openwall.com
http://www.openwall.com/lists/oss-security/2024/04/24/3
Third Party Advisory
https://security.netapp.com/advisory/ntap-20230703-0006/
Mailing List
https://www.openwall.com/lists/oss-security/2023/05/08/3
More from Kernel
9.8
CVE-2025-39682
tls: fix handling of zero-length records on the rx_list
8.8
CVE-2026-53266
netfilter: bridge: make ebt_snat ARP rewrite writable
8.8
CVE-2013-6282
Linux Kernel Improper Input Validation Vulnerability
8.4
CVE-2022-0185
Linux Kernel Heap-Based Buffer Overflow Vulnerability
8.4
CVE-2013-2094
Linux Kernel Privilege Escalation Vulnerability