PT-2026-37545 · Linux+3 · Linux+144

Published 2026-05-06 · Updated 2026-05-07 · CVE-2026-43205

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 out-of-bounds write issue exists in the dpaa2-switch driver. The driver retrieves the sw attr.num ifs value from firmware using the dpsw get attributes() function without validating it against the DPSW MAX IF limit of 64. This value controls the iteration process in the dpaa2 switch fdb get flood cfg() function, which writes port indices into the fixed-size cfg->if id[DPSW MAX IF] array. If the firmware reports a num ifs value of 64 or greater, the loop can write beyond the array boundaries. Specifically, when num ifs equals 64 and all ports match the flood filter, the loop fills all available slots, causing the subsequent write of the control interface to overflow by one entry.

Recommendations Apply a bound check for num ifs within the dpaa2 switch init() function.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-43205

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-5.8

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-5.15

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-5.15

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-5.11

Linux-Gcp-5.13

Linux-Gcp-5.15

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-5.15

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-5.15

Linux-Ibm-6.8

Linux-Intel-5.13

Linux-Intel-Iot-Realtime

Linux-Intel-Iotg

Linux-Intel-Iotg-5.15

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-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-5.8

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-5.15

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 · 16

• https://git.kernel.org/stable/c/c18493f750208eb4ff1198fc5a02786b8b2d70a6 · Patch
• https://git.kernel.org/stable/c/b690635d4719214892855b79ce018d4b1672ac96 · Patch
• https://git.kernel.org/stable/c/89764cf44544e943230f5e03b8c40a90da26537c · Patch
• https://git.kernel.org/stable/c/a26dda3bae469c8e4e1b1993ad33dafa32d0fc28 · Patch
• https://git.kernel.org/stable/c/8a5752c6dcc085a3bfc78589925182e4e98468c5 · Patch
• https://git.kernel.org/stable/c/8b841fd529db9faf8bc678d429d4bf4e98b10900 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43205 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43205 · Vendor Advisory
• https://git.kernel.org/stable/c/a3034a8d56174dd6464c46823438f25797910a8d · Patch
• https://ubuntu.com/security/CVE-2026-43205 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-43205 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-43205 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43205 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-43205 · Vendor Advisory
• https://docs.bell-sw.com/security/cves/CVE-2026-43205 · Note