PT-2025-40121 · Linux+4 · Linux Kernel+4

Published 2023-05-09 · Updated 2025-10-23 · CVE-2022-50436

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 An issue was identified in the Linux kernel related to ext4 filesystem handling. A commit extended the transaction scope in ext4 unlink() too far, including a call to ext4 find entry(). This function can cause a deadlock when called within a transaction because it may attempt to set up the directory’s encryption key. The issue is resolved by restoring the transaction to its original scope.

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

Exploit

Weakness Enumeration

CWE-833

Related Identifiers

BDU:2026-05859

CVE-2022-50436

RHSA-2023:2458

RHSA-2023_2458

SUSE-SU-2025:03615-1

SUSE-SU-2025:03628-1

SUSE-SU-2025:3716-1

SUSE-SU-2025:3761-1

Affected Products

Astra Linux

Linux Kernel

Red Hat

Suse

Ext4

References · 863

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50436.json · Exploit
• https://cve.org/CVERecord?id=CVE-2022-50436 · Security Note
• https://git.kernel.org/stable/c/1ba993208bcfd691e241483420a2a761d3f15750 · Patch
• https://git.kernel.org/stable/c/206dd3acfb9bca54a25b228c7c7c2257eedde09b · Patch
• https://security-tracker.debian.org/tracker/CVE-2022-50436 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-50436 · Vendor Advisory
• https://git.kernel.org/stable/c/6220ec405571ded17efedc56587190b542adf246 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50436 · Vendor Advisory
• https://git.kernel.org/stable/c/23ad034760dd38e12b0e0e1b28b9629f330810a1 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50436 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:03615-1 · Vendor Advisory
• https://git.kernel.org/stable/c/4c0d5778385cb3618ff26a561ce41de2b7d9de70 · Patch
• https://bdu.fstec.ru/vul/2026-05859 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:03628-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:3716-1 · Vendor Advisory