PT-2026-39136 · Linux · Linux Kernel

Published 2026-05-08 · Updated 2026-05-15 · CVE-2026-43475

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 version 6.19.0-rc7

Description An issue exists in the scsi storvsc component that causes a scheduling while atomic error and system lock-up when running on Hyper-V with PREEMPT RT enabled. This occurs within the storvsc queuecommand() function.

Recommendations Update the Linux kernel to a version where the fix for the storvsc queuecommand() function has been applied. As a temporary workaround, consider restricting the use of the storvsc module or disabling PREEMPT RT if the system is running on Hyper-V.

Fix

Related Identifiers

CVE-2026-43475

Affected Products

Linux Kernel

References · 20

• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43475 · Vendor Advisory
• https://git.kernel.org/stable/c/c2e73d8acd056347a70047e6be7cd98e0e811dfa · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-43475 · Security Note
• https://git.kernel.org/stable/c/57297736c08233987e5d29ce6584c6ca2a831b12 · Patch
• https://ubuntu.com/security/CVE-2026-43475 · Vendor Advisory
• https://git.kernel.org/stable/c/e7919a293f9b6101e38bde0d8613daea6c9955df · Patch
• https://git.kernel.org/stable/c/f8db760f4f52a73a022a3d6c84c488ead952a9b5 · Patch
• https://git.kernel.org/stable/c/91ab59f76d0866079420ebff1c7959fcd87a242e · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43475 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-43475 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-43475 · Vendor Advisory
• https://git.kernel.org/stable/c/cf00cb15f2515e38d3b7571bf6800b7c6ce70a84 · Patch
• https://git.kernel.org/stable/c/c7984d196476adcbd51c0ce386d7e90277198d57 · Patch
• https://git.kernel.org/stable/c/b82462af23e45e066dd56d2736ea70159a6ad647 · Patch
• https://cve.org/CVERecord?id=CVE-2026-43475 · Security Note