PT-2026-20454 · Linux · Linux Kernel

Published 2026-01-01 · Updated 2026-05-26 · CVE-2026-23228

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 SMB server component of the Linux kernel, specifically within the ksmbd tcp new connection() function. When kthread run() fails during the creation of a new connection, the active num conn counter is not decremented, leading to a leak. The issue occurs because the transport is freed using free transport(), which does not handle the counter decrement, instead of using ksmbd tcp disconnect().

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-2026-23228

ECHO-7806-0461-F81D

OESA-2026-1566

OESA-2026-1567

OESA-2026-1570

OPENSUSE-SU-2026:10387-1

Affected Products

Linux Kernel

References · 136

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23228.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-23216 · Security Note
• https://git.kernel.org/stable/c/6dd2645cf080a75be31fa66063c7332b291f46f0 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2025-71120 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-71129 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-23003 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-71186 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-22090 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-38491 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-71221 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-23228 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-23038 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-23094 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-23228 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-68785 · Security Note