PT-2025-26132 · Linux+3 · Linux Kernel+3

Published 2022-07-04 · Updated 2025-07-28 · CVE-2022-50206

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 A vulnerability in the Linux kernel has been resolved, which occurred when the emulation proc handler() function changed table->data for proc dointvec minmax. This could generate an Oops error if called concurrently with itself, resulting in a kernel NULL pointer dereference. The issue was fixed by keeping table->data as &insn->current mode and using container of() to retrieve the insn pointer, with an additional mutex to protect against current mode updates.

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:2026-04514

CVE-2022-50206

RHSA-2023:2458

RHSA-2023_2458

SUSE-SU-2025:02264-1

SUSE-SU-2025:02321-1

SUSE-SU-2025:02322-1

SUSE-SU-2025:02334-1

SUSE-SU-2025:02537-1

SUSE-SU-2025:2264-1

SUSE-SU-2025_02264-1

SUSE-SU-2025_02334-1

SUSE-SU-2025_02537-1

Affected Products

Astra Linux

Linux Kernel

Red Hat

Suse

References · 741

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50206.json · Exploit
• https://cve.org/CVERecord?id=CVE-2022-50206 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50206 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:02334-1 · Vendor Advisory
• https://git.kernel.org/stable/c/b51881b1da57fe9877125dfdd0aac5172958fcfd · Patch
• https://git.kernel.org/stable/c/af483947d472eccb79e42059276c4deed76f99a6 · Patch
• https://git.kernel.org/stable/c/9d5fec6ba2e4117d196a8259ab54615ffe562460 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-50206 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:02321-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-50206 · Vendor Advisory
• https://git.kernel.org/stable/c/04549063d5701976034d8c2bfda3d3a8cbf0409f · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50206 · Vendor Advisory
• https://git.kernel.org/stable/c/353b4673d01c512303c45cf2346f630cda73b5c9 · Patch
• https://bdu.fstec.ru/vul/2026-04514 · Security Note
• https://git.kernel.org/stable/c/6a2fd114678d7fc1b5a0f8865ae98f1c17787455 · Patch