PT-2026-39109 · Linux · Linux Kernel

Published 2026-05-08 · Updated 2026-05-15 · CVE-2026-43448

Positive Technologies (AI Summary)

CVSS v3.1

4.7

Medium

Base vector

AV:L/AC:H/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 race condition exists in the nvme poll irqdisable() function. A device can be disabled by nvme dev disable() (called via nvme reset work()) between the time an IRQ is disabled and when it is re-enabled. This causes pci irq vector() to return different IRQ types (MSI-X versus INTx), leading to an unbalanced enable warning because the system attempts to enable an INTx IRQ that was never disabled.

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

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

CVE-2026-43448

Affected Products

Linux Kernel

References · 17

• https://nvd.nist.gov/vuln/detail/CVE-2026-43448 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-43448 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-43448 · Security Note
• https://git.kernel.org/stable/c/fc71f409b22ca831a9f87a2712eaa09ef2bb4a5e · Patch
• https://git.kernel.org/stable/c/265dbc9bc33c29f60f90be3e0afe1c4067ebb70b · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43448 · Vendor Advisory
• https://git.kernel.org/stable/c/843e913cef4e33723663a899727f685a95ab53fe · Patch
• https://ubuntu.com/security/CVE-2026-43448 · Vendor Advisory
• https://git.kernel.org/stable/c/628773eba024d1107cc9ec157a682cbb42ac912a · Patch
• https://git.kernel.org/stable/c/e311d84c62eb76e025e11a44155b402e55950b83 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43448 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-43448 · Vendor Advisory
• https://git.kernel.org/stable/c/b56c49897bdac5cb49e3495ef421c391628ee9bb · Patch
• https://twitter.com/CVEnew/status/2052767619049300262 · Twitter Post
• https://twitter.com/hetmehtaa/status/2055151398283837677 · Twitter Post