PT-2025-41055 · Linux+2 · Linux Kernel+2

Published 2022-12-14 · Updated 2026-05-26 · CVE-2022-50550

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 memory leak occurs when a gendisk is successfully initialized but add disk() fails, such as when a loop device has an invalid number of minor device numbers specified. Specifically, iolatency is initialized during disk initialization but not cleaned up during error handling. This happens because the cleanup process relies on del gendisk() and rq qos exit(), which doesn't always execute for iolatency as it's initialized before add disk() is called. The issue is addressed by adding an extra call to rq qos exit() in blkcg exit disk().

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

Exploit

DoS

Missing Release of Resource after Effective Lifetime

Memory Leak

Weakness Enumeration

CWE-772

CWE-401

Related Identifiers

AZL-76628

BDU:2026-04113

CVE-2022-50550

RHSA-2023:6583

RHSA-2023_6583

Affected Products

Debian

Linux Kernel

Red Hat

References · 21

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50550.json · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50550 · Vendor Advisory
• https://git.kernel.org/stable/c/2a126e1db5553ce4498290df019866952f858954 · Patch
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2022-50550 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50550 · Vendor Advisory
• https://git.kernel.org/stable/c/813e693023ba10da9e75067780f8378465bf27cc · Patch
• https://cve.org/CVERecord?id=CVE-2022-50550 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-50550 · Vendor Advisory
• https://git.kernel.org/stable/c/215f9437dda09531bcb80605298a24219f01cec5 · Patch
• https://osv.dev/vulnerability/AZL-76628 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-50550 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-50550 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50550 · Security Note
• https://bdu.fstec.ru/vul/2026-04113 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2022-50550 · Vendor Advisory