PT-2026-36378 · Linux+3 · Linux+108

Published 2026-05-01 · Updated 2026-05-23 · CVE-2026-31743

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the zynqmp nvmem component of the nvmem subsystem where an incorrect buffer size is used during DMA allocation and memory copying. This can result in undersized DMA buffer access, potentially leading to memory corruption. The flaw involves the dma alloc coherent() function and the memcpy() function.

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

LPE

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-31743

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-6.14

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-6.14

Linux-Azure-Fde-6.17

Linux-Azure-Fde-6.2

Linux-Azure-Nvidia-6.14

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-Lts

Linux-Nvidia

Linux-Nvidia-6.11

Linux-Nvidia-6.17

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 · 14

• https://cve.org/CVERecord?id=CVE-2026-31743 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-31743 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31743 · Security Note
• https://ubuntu.com/security/CVE-2026-31743 · Vendor Advisory
• https://git.kernel.org/stable/c/784ed4abded1ca4b525fa4cade8b02f8c5d2a087 · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-31743 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31743 · Vendor Advisory
• https://git.kernel.org/stable/c/f9b88613ff402aa6fe8fd020573cb95867ae947e · Patch
• https://git.kernel.org/stable/c/2f6e5b9964d0a63a5ba84fca2642876afb70a662 · Patch
• https://git.kernel.org/stable/c/6c01e7f11f5e5f22285d19510a9643e2506e13c3 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31743 · Vendor Advisory
• https://docs.bell-sw.com/security/cves/CVE-2026-31743 · Note
• https://twitter.com/DFIR_Lab/status/2058011369874583637 · Twitter Post
• https://git.kernel.org/linus/f9b88613ff402aa6fe8fd020573cb95867ae947e · Note