PT-2026-36375 · Linux+3 · Linux+128

Published 2026-05-01 · Updated 2026-05-06 · CVE-2026-31740

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 race condition exists between the counter and PWM sub-drivers when assigning a struct device pointer to the dev member of the shared struct rz mtu3 channel. Because both drivers can use hardware channels 1 and 2, they may overwrite each other's assignments. Since the counter sub-driver relies on the dev member for runtime Power Management (PM), an incorrect probe order can lead to the driver performing PM actions on the wrong device instance.

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

Related Identifiers

CVE-2026-31740

Affected Products

Linux

Linux-Allwinner-5.19

Linux-Aws

Linux-Aws-5.0

Linux-Aws-5.11

Linux-Aws-5.13

Linux-Aws-5.19

Linux-Aws-5.3

Linux-Aws-5.8

Linux-Aws-6.14

Linux-Aws-6.17

Linux-Aws-6.2

Linux-Aws-6.5

Linux-Aws-6.8

Linux-Aws-Fips

Linux-Azure

Linux-Azure-5.11

Linux-Azure-5.13

Linux-Azure-5.19

Linux-Azure-5.3

Linux-Azure-5.8

Linux-Azure-6.11

Linux-Azure-6.14

Linux-Azure-6.17

Linux-Azure-6.2

Linux-Azure-6.5

Linux-Azure-6.8

Linux-Azure-Edge

Linux-Azure-Fde

Linux-Azure-Fde-5.19

Linux-Azure-Fde-6.14

Linux-Azure-Fde-6.17

Linux-Azure-Fde-6.2

Linux-Azure-Fde-6.8

Linux-Azure-Fips

Linux-Azure-Nvidia

Linux-Azure-Nvidia-6.14

Linux-Fips

Linux-Gcp

Linux-Gcp-5.11

Linux-Gcp-5.13

Linux-Gcp-5.19

Linux-Gcp-5.3

Linux-Gcp-5.8

Linux-Gcp-6.11

Linux-Gcp-6.14

Linux-Gcp-6.17

Linux-Gcp-6.2

Linux-Gcp-6.5

Linux-Gcp-6.8

Linux-Gcp-Fips

Linux-Gke

Linux-Gke-4.15

Linux-Gkeop-5.15

Linux-Gke-5.4

Linux-Gkeop

Linux-Hwe

Linux-Hwe-5.11

Linux-Hwe-5.13

Linux-Hwe-5.19

Linux-Hwe-5.8

Linux-Hwe-6.11

Linux-Hwe-6.14

Linux-Hwe-6.17

Linux-Hwe-6.2

Linux-Hwe-6.5

Linux-Hwe-6.8

Linux-Hwe-Edge

Linux-Ibm

Linux-Ibm-6.8

Linux-Intel-5.13

Linux-Intel-Iot-Realtime

Linux-Lowlatency

Linux-Lowlatency-Hwe-5.19

Linux-Lowlatency-Hwe-6.11

Linux-Lowlatency-Hwe-6.2

Linux-Lowlatency-Hwe-6.5

Linux-Lowlatency-Hwe-6.8

Linux-Lts

Linux-Nvidia

Linux-Nvidia-6.11

Linux-Nvidia-6.2

Linux-Nvidia-6.5

Linux-Nvidia-6.8

Linux-Nvidia-Lowlatency

Linux-Nvidia-Tegra

Linux-Oem

Linux-Oem-5.10

Linux-Oem-5.13

Linux-Oem-5.14

Linux-Oem-5.17

Linux-Oem-5.6

Linux-Oem-6.0

Linux-Oem-6.1

Linux-Oem-6.11

Linux-Oem-6.14

Linux-Oem-6.17

Linux-Oem-6.5

Linux-Oem-6.8

Linux-Oracle

Linux-Oracle-5.0

Linux-Oracle-5.11

Linux-Oracle-5.13

Linux-Oracle-5.3

Linux-Oracle-5.8

Linux-Oracle-6.14

Linux-Oracle-6.17

Linux-Oracle-6.5

Linux-Oracle-6.8

Linux-Raspi

Linux-Raspi-Realtime

Linux-Raspi2

Linux-Realtime

Linux-Realtime-6.14

Linux-Realtime-6.17

Linux-Realtime-6.8

Linux-Riscv

Linux-Riscv-5.11

Linux-Riscv-5.19

Linux-Riscv-5.8

Linux-Riscv-6.14

Linux-Riscv-6.17

Linux-Riscv-6.5

Linux-Riscv-6.8

Linux-Starfive-5.19

Linux-Starfive-6.2

Linux-Starfive-6.5

Linux-Xilinx

Linux Kernel

References · 14

• https://ubuntu.com/security/CVE-2026-31740 · Vendor Advisory
• https://git.kernel.org/stable/c/2932095c114b98cbb40ccf34fc00d613cb17cead · Patch
• https://git.kernel.org/stable/c/28a371be901ef44ee03726c2575d7d6795521fe0 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-31740 · Security Note
• https://git.kernel.org/stable/c/63be324c795262f0e316c6fe9b329d83afa1ec93 · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-31740 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-31740 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-31740 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31740 · Vendor Advisory
• https://git.kernel.org/stable/c/633dfbf0eb2766c597c1a59dd83035c82e14791d · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31740 · Vendor Advisory
• https://git.kernel.org/stable/c/6562290225c197e2e193a53de2a517815288dcd1 · Patch
• https://git.kernel.org/linus/2932095c114b98cbb40ccf34fc00d613cb17cead · Note
• https://docs.bell-sw.com/security/cves/CVE-2026-31740 · Note