PT-2023-9734 · Linux+4 · Linux Kernel+4

Published 2023-02-22 · Updated 2025-09-29 · CVE-2023-52731

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to a buffer overflow in the fbdev component of the Linux kernel. This can lead to corruption of pages and potentially allow an attacker to access confidential information. The problem occurs when a fbdev with deferred I/O is opened and closed, leaving dirty pages queued in the pageref list. These pages may later be processed, causing corruption. A patch has been created to address this bug by canceling the delayed work and cleaning up the pageref list when the device is closed.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Out of bounds Read

Weakness Enumeration

CWE-119

CWE-125

Related Identifiers

ALSA-2025_12746

ALSA-2025_12752

ALSA-2025_12753

ALSA-2025_16880

BDU:2024-10374

CVE-2023-52731

INFSA-2024_9315

RHSA-2024:9315

RHSA-2024_9315

SUSE-SU-2024:2008-1

SUSE-SU-2024:2019-1

SUSE-SU-2024:2190-1

Affected Products

Astra Linux

Linux Kernel

Red Hat

Red Os

Suse

References · 1188

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52731.json · Exploit
• https://git.kernel.org/stable/c/3efc61d95259956db25347e2a9562c3e54546e20 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-52731 · Vendor Advisory
• http://repo.red-soft.ru/redos/7.3c/x86_64/updates · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-52731 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-52731 · Security Note
• https://ubuntu.com/security/CVE-2023-52731 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2008-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-10374 · Security Note
• https://git.kernel.org/stable/c/f1d91f0e9d5a240a809698d7d9c5a538e7dcc149 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-52731 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-52731 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2023-52731 · Vendor Advisory
• https://git.kernel.org/stable/c/87b9802ca824fcee7915e717e9a60471af62e8e9 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:2019-1 · Vendor Advisory