PT-2025-37636 · Linux+2 · Linux Kernel+2

Published 2022-11-08 · Updated 2025-12-04 · CVE-2022-50334

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 null pointer dereference issue in the hugetlbfs parse param() function. This occurs when parsing mount parameters, specifically when an illegal parameter like "size=" is provided, resulting in a null pointer being passed to hugetlbfs parse param(). The function then attempts to dereference this null pointer, leading to a crash. The issue was identified through Syzkaller testing. The vfs parse fs string() function can set the param->string to a null pointer if the file system string has zero length.

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:2026-04863

CVE-2022-50334

SUSE-SU-2025:4111-1

SUSE-SU-2025:4135-1

SUSE-SU-2025:4139-1

SUSE-SU-2025:4149-1

SUSE-SU-2025:4188-1

SUSE-SU-2025:4320-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 475

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50334.json · Exploit
• https://git.kernel.org/stable/c/dcd28191be9bbf307ba51a5b485773a55b0037c4 · Patch
• https://git.kernel.org/stable/c/965e8f8ae0f642b5528f5a82b7bcaf15a659d5bd · Patch
• https://bdu.fstec.ru/vul/2026-04863 · Security Note
• https://git.kernel.org/stable/c/9a8862820cbf1f18dca4f3b4c289d88561b3a384 · Patch
• https://cve.org/CVERecord?id=CVE-2022-50334 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:4111-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4135-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-50334 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-50334 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50334 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50334 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4320-1 · Vendor Advisory
• https://git.kernel.org/stable/c/fa71639873518e3587632ae58e25e4a96b57fa90 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:4149-1 · Vendor Advisory