PT-2025-40138 · Linux+3 · Linux Kernel+3

Published 2023-11-07 · Updated 2026-03-26 · CVE-2022-50453

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 Linux kernel contains a flaw related to GPIO character device handling. Specifically, a NULL-pointer dereference can occur when requesting lines, unbinding the GPIO device, and then calling system calls such as ioctl(), read(), or poll(). This issue impacts both version 1 and version 2 of the user-space API (uAPI). The problem arises from a race condition where a device might be removed after a NULL check, leading to a potential kernel crash. This can affect GPIO devices capable of hot-unplugging, including HID GPIO expanders like the CP2112, and was observed with the GPIO simulator.

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

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2026-05861

CVE-2022-50453

RHSA-2023:6583

RHSA-2023_6583

RHSA-2024:2394

RHSA-2024_2394

SUSE-SU-2025:03615-1

SUSE-SU-2025:03628-1

SUSE-SU-2025:3716-1

SUSE-SU-2025:3761-1

SUSE-SU-2026:1078-1

Affected Products

Cp2112

Linux Kernel

Red Hat

Suse

References · 1007

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50453.json · Exploit
• https://osv.dev/vulnerability/CVE-2022-50453 · Vendor Advisory
• https://git.kernel.org/stable/c/6d79546622baab843172b52c3af035f83c1b21df · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:03615-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50453 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50453 · Vendor Advisory
• https://git.kernel.org/stable/c/533aae7c94dbc2b14301cfd68ae7e0e90f0c8438 · Patch
• https://git.kernel.org/stable/c/d66f68ac9e7ba46b6b90fbe25155723f2126088a · Patch
• https://osv.dev/vulnerability/SUSE-SU-2026:1078-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-50453 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-50453 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:03628-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:3716-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50453 · Security Note
• https://git.kernel.org/stable/c/7c755a2d6df511eeb5afba966ac28140f9ea5063 · Patch