PT-2026-37495 · Linux+2 · Linux+103

Published 2026-05-06 · Updated 2026-05-13 · CVE-2026-43155

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 memory leak occurs in the mmio regmap when an allocation happens during the probe process and subsequently fails. The regmap is not freed during probe failures, such as probe deferral, or during driver unbind.

Recommendations Switch to using the device managed allocator to ensure the regmap is released on probe failures and during driver unbind.

Fix

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

CVE-2026-43155

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-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-6.17

Linux-Azure-6.2

Linux-Azure-6.5

Linux-Azure-Edge

Linux-Azure-Fde

Linux-Azure-Fde-5.19

Linux-Azure-Fde-6.17

Linux-Azure-Fde-6.2

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-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-Edge

Linux-Intel-5.13

Linux-Intel-Iot-Realtime

Linux-Lowlatency-Hwe-5.19

Linux-Lowlatency-Hwe-6.11

Linux-Lowlatency-Hwe-6.2

Linux-Lowlatency-Hwe-6.5

Linux-Nvidia

Linux-Nvidia-6.11

Linux-Nvidia-6.2

Linux-Nvidia-6.5

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-Raspi

Linux-Raspi-Realtime

Linux-Raspi2

Linux-Realtime

Linux-Realtime-6.14

Linux-Realtime-6.17

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-Starfive-5.19

Linux-Starfive-6.2

Linux-Starfive-6.5

Linux Kernel

References · 11

• https://git.kernel.org/stable/c/3c4ae63073d84abee5d81ce46d86a94e9dae9c89 · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-43155 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43155 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43155 · Security Note
• https://git.kernel.org/stable/c/cbde3c109d52564ae2c12e514c33c44345e84b2c · Patch
• https://cve.org/CVERecord?id=CVE-2026-43155 · Security Note
• https://ubuntu.com/security/CVE-2026-43155 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43155 · Vendor Advisory
• https://git.kernel.org/stable/c/76096f156fe9dc9fbd6e4618088706e91b9b0a6c · Patch
• https://t.me/cveNotify/163374 · Telegram Post
• https://git.kernel.org/linus/3c4ae63073d84abee5d81ce46d86a94e9dae9c89 · Note