PT-2026-38955 · Linux · Linux Kernel

Published 2026-05-08 · Updated 2026-05-15 · CVE-2026-43313

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 NULL-pointer dereference exists in the acpi processor errata piix4() function. The issue occurs because the dev pointer is assigned an IDE device and subsequently reassigned an ISA device. If the first lookup is successful but the second fails, dev becomes NULL, leading to a crash when the dev dbg() function is called.

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

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2026-43313

OESA-2026-2312

OESA-2026-2313

OESA-2026-2314

Affected Products

Linux Kernel

References · 45

• https://security-tracker.debian.org/tracker/CVE-2026-43313 · Vendor Advisory
• https://git.kernel.org/stable/c/29f60d3d06818d40118a30d663231f027ae87a05 · Patch
• https://ubuntu.com/security/CVE-2026-43313 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43214 · Security Note
• https://git.kernel.org/stable/c/f132e089fe89cadc2098991f0a3cb05c3f824ac6 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-31515 · Security Note
• https://git.kernel.org/stable/c/0398b641be2b66c2fc7e0163c606ef19372e7ad5 · Patch
• https://osv.dev/vulnerability/OESA-2026-2314 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31625 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-43313 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-31575 · Security Note
• https://git.kernel.org/stable/c/06724a60cfa9767ea90b0f5d3dfb5cdd251b64f5 · Patch
• https://osv.dev/vulnerability/OESA-2026-2312 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43429 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-31504 · Security Note