PT-2025-53937 · Linux+2 · Linux Kernel+2

Published 2022-08-25 · Updated 2026-02-24 · CVE-2022-50819

Positive Technologies (AI Summary)

CVSS v2.0

3.7

Low

Base vector

AV:L/AC:H/Au:N/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.19.0-syzkaller-13930-g7ebfc85e2cd7

Description The Linux kernel contains a flaw within the udmabuf subsystem. Specifically, if the creation of a scatter-gather (sg) table fails during the mapping of a dmabuf by userspace, the ubuf->sg pointer is not set to NULL. Subsequently, when userspace closes the dmabuf file descriptor, an attempt is made to free an invalid sg table, leading to a general protection fault and a potential system crash. This issue was reported by syzbot.

Recommendations Update to version 5.19.0-syzkaller-13930-g7ebfc85e2cd7 or a later version to address this issue.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2026-01146

CVE-2022-50819

RHSA-2023:6583

RHSA-2023:7077

SUSE-SU-2026:0263-1

SUSE-SU-2026:0317-1

SUSE-SU-2026:0411-1

SUSE-SU-2026:0617-1

Affected Products

Centos

Linux Kernel

Red Hat

References · 980

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50819.json · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50819 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-50819 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50819 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-50819 · Security Note
• https://osv.dev/vulnerability/CVE-2022-50819 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0617-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-50819 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50819 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2026:0411-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0263-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0317-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-01146 · Security Note
• https://suse.com/security/cve/CVE-2023-53862 · Note
• https://bugzilla.suse.com/1255970 · Note