Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2023-2236

Severity CVSS v4.0:
Pending analysis
Type:
CWE-416 Use After Free
Publication date:
01/05/2023
Last modified:
13/02/2025

Description

A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation.<br /> <br /> Both io_install_fixed_file and its callers call fput in a file in case of an error, causing a reference underflow which leads to a use-after-free vulnerability.<br /> <br /> We recommend upgrading past commit 9d94c04c0db024922e886c9fd429659f22f48ea4.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.19 (including) 6.0.11 (excluding)
cpe:2.3:a:netapp:hci_baseboard_management_controller:h300s:*:*:*:*:*:*:*
cpe:2.3:a:netapp:hci_baseboard_management_controller:h410c:*:*:*:*:*:*:*
cpe:2.3:a:netapp:hci_baseboard_management_controller:h410s:*:*:*:*:*:*:*
cpe:2.3:a:netapp:hci_baseboard_management_controller:h500s:*:*:*:*:*:*:*
cpe:2.3:a:netapp:hci_baseboard_management_controller:h700s:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools