PT-2025-53064 · Linux · Linux Kernel

Published 2023-07-19 · Updated 2026-03-24 · CVE-2023-54066

Positive Technologies (AI Summary)

CVSS v2.0

4.6

Medium

Base vector

AV:L/AC:L/Au:S/C:N/I:N/A:C

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

Description A flaw exists in the Linux kernel’s gl861 i2c master xfer function within the dvb-usb-v2 module. The issue arises because the msg parameter, controlled by the user, can lead to a null pointer dereference if msg[i].buf is null and msg[i].len is zero. This occurs when accessing msg[i].buf[0] without proper validation, potentially causing a crash. The vulnerability is addressed by adding a check on msg[i].len to prevent the crash.

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

Exploit

Improper Resource Release

NULL Pointer Dereference

Weakness Enumeration

CWE-404

CWE-476

Related Identifiers

BDU:2026-01244

CVE-2023-54066

RHSA-2024:9315

SUSE-SU-2026:0278-1

SUSE-SU-2026:0281-1

SUSE-SU-2026:0293-1

SUSE-SU-2026:0315-1

SUSE-SU-2026:20477-1

SUSE-SU-2026:20498-1

SUSE-SU-2026:20845-1

SUSE-SU-2026:20876-1

Affected Products

Linux Kernel

References · 1466

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54066.json · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2026:20845-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0281-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:20498-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-54066 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0278-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-54066 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-54066 · Security Note
• https://ubuntu.com/security/CVE-2023-54066 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-54066 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:20477-1 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-54066 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0293-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0315-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-54066 · Vendor Advisory