PT-2025-41051 · Linux+4 · Linux Kernel+4

Published 2022-12-08 · Updated 2026-02-04 · CVE-2022-50546

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.1.0-rc4-syzkaller-62821-gcb231e2f67ec

Description The Linux kernel contains a flaw in the ext4 filesystem implementation. Specifically, the ext4 evict inode function accesses an uninitialized value, potentially leading to unpredictable behavior or system instability. This issue arises because the i flags field of an inode is not properly initialized in ext4 alloc inode() before being accessed in ext4 evict inode(). The problem was identified by Syzbot, a fuzzing tool, and a fix involves initializing ei->i flags within the ext4 alloc inode() function.

Recommendations Update the Linux kernel to version 6.1.0-rc4-syzkaller-62821-gcb231e2f67ec or a later version that includes the fix.

Exploit

Fix

Use of Uninitialized Resource

Weakness Enumeration

CWE-908

CWE-457

Related Identifiers

BDU:2026-04114

CESA-2024_3138

CVE-2022-50546

RHSA-2023:2458

RHSA-2023_2458

RHSA-2024:3138

RHSA-2024_3138

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

Centos

Linux Kernel

Red Hat

Suse

Ext4

References · 473

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50546.json · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2025:4135-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4149-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-50546 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4111-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4139-1 · Vendor Advisory
• https://git.kernel.org/stable/c/56491d60ddca9c697d885394cb0173675b9ab81f · Patch
• https://git.kernel.org/stable/c/f0bffdcc7cb14598af2aa706f1e0f2a9054154ba · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50546 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50546 · Security Note
• https://bdu.fstec.ru/vul/2026-04114 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50546 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4188-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-50546 · Security Note
• https://git.kernel.org/stable/c/091f85db4c3fb1734a6d7fb4777a2b2831da6631 · Patch