Name: CVE-2023-21264: Improper Restriction of Operations within the Bounds of a Memory Buffer
Creator: Rapid7
Published: 2023-08-14T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2023-21264, CWE-119, CVSS 6.7, EPSS 0.00013

In multiple functions of mem_protect.c, there is a possible way to access hypervisor memory due to a memory access check in the wrong place. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

CVSS Details

CVSS 3.1 Base Score: 6.7
CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Debian	—	Upgrade linux	May 15, 2025	Aug 14, 2023
Ubuntu	—	Upgrade linux-image-lowlatencyUpgrade linux-image-lowlatency-64kUpgrade linux-image-virtualUpgrade linux-image-6.2.0-33-genericUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-6.2.0-1014-gcpUpgrade linux-image-ibmUpgrade linux-image-generic-lpaeUpgrade linux-image-raspi-nolpaeUpgrade linux-image-6.2.0-1010-ibmUpgrade linux-image-6.2.0-1011-nvidiaUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-6.2.0-33-generic-lpaeUpgrade linux-image-genericUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-6.2.0-1012-azure-fdeUpgrade linux-image-generic-64kUpgrade linux-image-6.2.0-1011-nvidia-64kUpgrade linux-image-kvmUpgrade linux-image-nvidia-6.2Upgrade linux-image-generic-lpae-hwe-22.04Upgrade linux-image-6.2.0-33-generic-64kUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-nvidia-64k-6.2Upgrade linux-image-6.2.0-1012-azureUpgrade linux-image-6.2.0-1012-oracleUpgrade linux-image-6.2.0-1013-lowlatencyUpgrade linux-image-6.2.0-1005-starfiveUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-6.2.0-1013-lowlatency-64kUpgrade linux-image-6.2.0-1013-kvmUpgrade linux-image-6.2.0-1013-raspiUpgrade linux-image-6.2.0-1012-awsUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-oracleUpgrade linux-image-azureUpgrade linux-image-raspiUpgrade linux-image-awsUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-gcpUpgrade linux-image-azure-fdeUpgrade linux-image-starfive	Sep 20, 2023	Aug 14, 2023

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CVSS Details

Covered by Rapid7

Prioritize with Active Threat Intelligence