PT-2026-38953 · Linux+1 · Linux Kernel+1

Published 2026-05-08 · Updated 2026-05-15 · CVE-2026-43311

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 An issue exists in the Tegra platform's Power Management Controller (PMC) during the system suspend resume process. The generic handle irq() function is called from a non-interrupt context, which is considered unsafe and triggers a kernel warning. To resolve this, the call must be deferred to an IRQ work executed in a hard IRQ context. For PREEMPT RT kernels, the IRQ WORK INIT HARD variant is required to ensure the work is processed in the hardirq context rather than being deferred to a preemptible per-CPU kthread.

Recommendations Update the Linux kernel to a version where the generic handle irq() call in the Tegra PMC is deferred to an IRQ work using IRQ WORK INIT HARD().

Fix

Related Identifiers

CVE-2026-43311

Affected Products

Linux Kernel

Tegra

References · 14

• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43311 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-43311 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43311 · Vendor Advisory
• https://git.kernel.org/stable/c/e6d96073af681780820c94079b978474a8a44413 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43311 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43311 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-43311 · Vendor Advisory
• https://git.kernel.org/stable/c/64016227dcdb968b7030eda04304f3d0df5d209d · Patch
• https://cve.org/CVERecord?id=CVE-2026-43311 · Security Note
• https://twitter.com/CVEnew/status/2053174628332212562 · Twitter Post
• https://t.me/cveNotify/163650 · Telegram Post
• https://docs.bell-sw.com/security/cves/CVE-2026-43311 · Note
• https://twitter.com/hetmehtaa/status/2055151398283837677 · Twitter Post
• https://git.kernel.org/linus/e6d96073af681780820c94079b978474a8a44413 · Note