PT-2026-37496 · Linux+3 · Linux+156

Published 2026-05-06 · Updated 2026-05-13 · CVE-2026-43156

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 The pegasus probe() function fills USB Request Blocks (URBs) with hardcoded endpoint pipes without verifying the endpoint descriptors. Specifically, it uses usb rcvbulkpipe(dev, 1) for RX data, usb sndbulkpipe(dev, 2) for TX data, and usb rcvintpipe(dev, 3) for status interrupts. A malformed USB device can present these endpoints with transfer types that differ from the driver's assumptions, potentially triggering an assertion.

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

Related Identifiers

CVE-2026-43156

Affected Products

Linux

Linux-Allwinner-5.19

Linux-Aws

Linux-Aws-5.0

Linux-Aws-5.11

Linux-Aws-5.13

Linux-Aws-5.15

Linux-Aws-5.19

Linux-Aws-5.3

Linux-Aws-5.4

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-Aws-Hwe

Linux-Azure

Linux-Azure-4.15

Linux-Azure-5.11

Linux-Azure-5.13

Linux-Azure-5.15

Linux-Azure-5.19

Linux-Azure-5.3

Linux-Azure-5.4

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-5.15

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-Bluefield

Linux-Fips

Linux-Gcp

Linux-Gcp-4.15

Linux-Gcp-5.11

Linux-Gcp-5.13

Linux-Gcp-5.15

Linux-Gcp-5.19

Linux-Gcp-5.3

Linux-Gcp-5.4

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-5.15

Linux-Hwe-5.19

Linux-Hwe-5.4

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-5.15

Linux-Ibm-5.4

Linux-Ibm-6.8

Linux-Intel-5.13

Linux-Intel-Iot-Realtime

Linux-Intel-Iotg

Linux-Intel-Iotg-5.15

Linux-Iot

Linux-Kvm

Linux-Lowlatency

Linux-Lowlatency-Hwe-5.15

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-Lts-Xenial

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-Nvidia-Tegra-5.15

Linux-Nvidia-Tegra-Igx

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-5.15

Linux-Oracle-5.3

Linux-Oracle-5.4

Linux-Oracle-5.8

Linux-Oracle-6.14

Linux-Oracle-6.17

Linux-Oracle-6.5

Linux-Oracle-6.8

Linux-Raspi

Linux-Raspi-5.4

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-5.15

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-Xilinx-Zynqmp

Linux Kernel

References · 18

• https://git.kernel.org/stable/c/26b3ec62fa1a94ac801feca47f040fc729b3c174 · Patch
• https://git.kernel.org/stable/c/35854ed5c40b02f95824e44398f9d2ba33727203 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43156 · Vendor Advisory
• https://git.kernel.org/stable/c/229dc9b9db475ac900182bafe258943e0e054c6d · Patch
• https://ubuntu.com/security/CVE-2026-43156 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-43156 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43156 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-43156 · Vendor Advisory
• https://git.kernel.org/stable/c/3d7e6ce34f4fcc7083510c28b17a7c36462a25d4 · Patch
• https://git.kernel.org/stable/c/2705709f6574a088aab246af72fc95f2fea51484 · Patch
• https://git.kernel.org/stable/c/a3e64e950a3981a8199de9798f6d21261b959171 · Patch
• https://git.kernel.org/stable/c/67ba6b13dbcaf45681fb6758794c5ac5fa589a6c · Patch
• https://cve.org/CVERecord?id=CVE-2026-43156 · Security Note
• https://git.kernel.org/stable/c/d2e7c898cc02dfe42443489a67a45ed616cb76e9 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43156 · Vendor Advisory