PT-2026-5526 · Linux · Linux Kernel

Published 2026-01-01 · Updated 2026-04-20 · CVE-2026-23023

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 exists in the idpf vport rel() function within the Linux kernel's idpf module. The issue occurs because the vport->rx ptype lkup memory is not freed during a reset operation, leading to a memory leak. This was reported by kmemleak, which identified an unreferenced object in the process. The function idpf send get rx ptype msg() and idpf init task() are part of the call stack.

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

Exploit

Missing Release of Resource after Effective Lifetime

Memory Leak

Weakness Enumeration

CWE-772

CWE-401

Related Identifiers

BDU:2026-03766

CVE-2026-23023

OPENSUSE-SU-2026:20416-1

SUSE-SU-2026:0962-1

SUSE-SU-2026:1081-1

SUSE-SU-2026:20838-1

SUSE-SU-2026:20931-1

SUSE-SU-2026:21284-1

Affected Products

Linux Kernel

References · 476

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23023.json · Exploit
• https://cve.org/CVERecord?id=CVE-2026-23023 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-23023 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:20838-1 · Vendor Advisory
• https://git.kernel.org/stable/c/a4212d6732e3f674c6cc7d0b642f276d827e8f94 · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-23023 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-23023 · Vendor Advisory
• https://git.kernel.org/stable/c/ec602a2a4071eb956d656ba968c58fee09f0622d · Patch
• https://osv.dev/vulnerability/SUSE-SU-2026:20931-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23023 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:1081-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-23023 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:20416-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-23023 · Vendor Advisory
• https://git.kernel.org/stable/c/f6242b354605faff263ca45882b148200915a3f6 · Patch