PT-2025-37661 · Linux+4 · Linux Kernel+4

Published 2023-07-19 · Updated 2026-04-14 · CVE-2023-53220

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

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

Description The az6007 i2c xfer function is susceptible to a null pointer dereference. This occurs when the msg parameter, controlled by the user, has a null buffer (msg[i].buf) and a length of zero (msg[i].len). Without proper validation, malicious data can trigger a crash when accessing msg[i].buf[0]. A check on msg[i].len has been added to prevent this issue.

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

ALSA-2025_12746

ALSA-2025_12752

ALSA-2025_12753

ALSA-2025_16880

BDU:2026-04620

CVE-2023-53220

OESA-2025-2468

OESA-2025-2469

OPENSUSE-SU-2025:15585-1

RHSA-2024:9315

RHSA-2024_9315

SUSE-SU-2025:03600-1

SUSE-SU-2025:03626-1

SUSE-SU-2025:03634-1

SUSE-SU-2025:20851-1

SUSE-SU-2025:20861-1

SUSE-SU-2025:20870-1

SUSE-SU-2025:20898-1

SUSE-SU-2025:3751-1

SUSE-SU-2025:4057-1

SUSE-SU-2025:4132-1

SUSE-SU-2025:4141-1

Affected Products

Astra Linux

Linux Kernel

Red Hat

Red Os

Suse

References · 1577

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53220.json · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2025:4057-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53220 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53548 · Security Note
• https://git.kernel.org/stable/c/c6763fefa267f6e62595a6ac1f57815d99fc90b7 · Patch
• https://git.kernel.org/stable/c/6ab7ea4e17d6a605d05308adf8f3408924770cba · Patch
• https://git.kernel.org/stable/c/1047f9343011f2cedc73c64829686206a7e9fc3f · Patch
• https://git.kernel.org/stable/c/adcb73f8ce9aec48b1f85223f401c1574015d8d2 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-50347 · Security Note
• https://osv.dev/vulnerability/OESA-2025-2468 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53229 · Security Note
• https://bdu.fstec.ru/vul/2026-04620 · Security Note
• https://git.kernel.org/stable/c/a9def3e9718a4dc756f48db147d42ec41a966240 · Patch
• https://osv.dev/vulnerability/OESA-2025-2469 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53220 · Security Note