PT-2026-37616 · Linux+2 · Linux Kernel+2

Published 2026-05-06 · Updated 2026-05-26 · CVE-2026-43276

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A use-after-free crash occurs on the service rescan PCI path. When mana serv reset() calls mana gd suspend(), the mana gd cleanup() function destroys the gc->service wq workqueue. If the subsequent mana gd resume() fails with -ETIMEDOUT or -EPROTO, the process continues to mana serv rescan(), which triggers pci stop and remove bus device(). This action invokes the PCI .remove callback (mana gd remove), which calls mana gd cleanup() a second time, attempting to destroy the already freed gc->service wq variable.

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

Double Free

Weakness Enumeration

CWE-415

Related Identifiers

CVE-2026-43276

USN-8310-1

Affected Products

Linuxmint

Linux Kernel

Ubuntu

References · 33

• https://ubuntu.com/security/CVE-2026-43078 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-71144 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31431 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-71155 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31504 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-71139 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-43276 · Security Note
• https://ubuntu.com/security/notices/USN-8310-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43276 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-71088 · Vendor Advisory
• https://git.kernel.org/stable/c/a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77e · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43276 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43276 · Security Note
• https://ubuntu.com/security/CVE-2025-71134 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-43276 · Vendor Advisory