PT-2026-8140 · Ext4+3 · Ext4+3

CVE-2026-23145 · Published 2026-01-01 · Updated 2026-07-23

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 A flaw exists in the Linux kernel related to a reference count leak within the ext4 file system. Specifically, the error branch in the ext4 xattr inode update ref function fails to release the reference count for iloc.bh. This issue was identified during code review.

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

Exploit

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

CVE-2026-23145

OESA-2026-1760

OPENSUSE-SU-2026:20416-1

SUSE-SU-2026:0962-1

SUSE-SU-2026:1081-1

SUSE-SU-2026:20667-1

SUSE-SU-2026:20720-1

SUSE-SU-2026:20838-1

SUSE-SU-2026:20845-1

SUSE-SU-2026:20873-1

SUSE-SU-2026:20876-1

SUSE-SU-2026:20931-1

SUSE-SU-2026:21284-1

USN-8162-1

USN-8180-1

USN-8180-2

USN-8180-3

USN-8180-4

USN-8180-5

USN-8180-6

USN-8186-1

USN-8187-1

USN-8188-1

USN-8275-1

USN-8278-1

USN-8278-2

USN-8289-1

USN-8289-2

USN-8296-1

USN-8296-2

USN-8297-1

USN-8393-1

USN-8440-1

USN-8499-1

USN-8570-1

USN-8594-1

Affected Products

Linuxmint

Linux Kernel

Ubuntu

Ext4

References · 2521

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23145.json · Exploit
• https://ubuntu.com/security/CVE-2026-23254 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-71266 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43304 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-71222 · Vendor Advisory
• https://osv.dev/vulnerability/USN-8297-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-23145 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23106 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-68380 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-45895 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-71191 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8393-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53662 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23036 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23067 · Vendor Advisory