PT-2026-30138 · Linux · Linux Kernel

Published 2026-03-25 · Updated 2026-04-14 · CVE-2026-23443

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 The Linux kernel contained a flaw where device pointers could be dereferenced after the corresponding device objects were released, potentially leading to a use-after-free condition. Additionally, debug messages related to errata flags were incorrectly printed when those flags were not set. These issues were addressed by relocating the message printing to the points in the code where the errata flags are set.

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

Use After Free

NULL Pointer Dereference

Weakness Enumeration

CWE-416

CWE-476

Related Identifiers

BDU:2026-04784

CVE-2026-23443

Affected Products

Linux Kernel

References · 20

• https://git.kernel.org/stable/c/68408e8f9e366ad9850a66ac65cb569f13bf6cd4 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-23443 · Vendor Advisory
• https://git.kernel.org/stable/c/2e369ba9eb7b8a06e9cc35a3e7fe73e59272f8c2 · Patch
• https://git.kernel.org/stable/c/8583f62259e1b315d5239371adfb36939cdab741 · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-23443 · Vendor Advisory
• https://git.kernel.org/stable/c/edf4c2aaee08e8fd503fbae705c801e92a0b55d7 · Patch
• https://git.kernel.org/stable/c/98473309a36acc271009b85e0bb53a4c0dddf5c2 · Patch
• https://bdu.fstec.ru/vul/2026-04784 · Security Note
• https://git.kernel.org/stable/c/e0c470049344e9346fff79d7e2362212c216665e · Patch
• https://git.kernel.org/stable/c/bf504b229cb8d534eccbaeaa23eba34c05131e25 · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-23443 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23443 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-23443 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-23443 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-23443 · Vendor Advisory