PT-2025-40125 · Linux+2 · Linux Kernel+2

CVE-2022-50440 · Published 2022-10-25 · Updated 2025-10-23

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 within the drm/vmwgfx module related to cursor handling. Insufficient validation of the copybox size for snooped cursors could lead to memory copy overflows when handling userspace DMA surface copies, potentially causing system crashes. The issue stems from a lack of proper dimension checks during the copy process from the surface to the snooped image.

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

Exploit

DoS

NULL Pointer Dereference

Improper Resource Release

Weakness Enumeration

CWE-476

CWE-404

Related Identifiers

BDU:2026-09291

CVE-2022-50440

RHSA-2023:6583

RHSA-2023:7077

SUSE-SU-2025:03613-1

SUSE-SU-2025:03614-1

SUSE-SU-2025:03615-1

SUSE-SU-2025:03626-1

SUSE-SU-2025:03628-1

SUSE-SU-2025:3716-1

SUSE-SU-2025:3761-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 1008

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50440.json · Exploit
• https://security-tracker.debian.org/tracker/CVE-2022-50440 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:3716-1 · Vendor Advisory
• https://git.kernel.org/stable/c/6b4e70a428b5a11f56db94047b68e144529fe512 · Patch
• https://git.kernel.org/stable/c/ee8d31836cbe7c26e207bfa0a4a726f0a25cfcf6 · Patch
• https://cve.org/CVERecord?id=CVE-2022-50440 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50440 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50440 · Vendor Advisory
• https://git.kernel.org/stable/c/50d177f90b63ea4138560e500d92be5e4c928186 · Patch
• https://git.kernel.org/stable/c/6948e570f54f2044dd4da444b10471373a047eeb · Patch
• https://git.kernel.org/stable/c/622d527decaac0eb65512acada935a0fdc1d0202 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:3761-1 · Vendor Advisory
• https://git.kernel.org/stable/c/4d54d11b49860686331c58a00f733b16a93edfc4 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:03628-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:03615-1 · Vendor Advisory