PT-2026-37508 · Linux+4 · Linux+158

Published 2026-05-06 · Updated 2026-05-26 · CVE-2026-43168

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 An issue exists in the ocfs2 component regarding reflink preserve cleanup. The cleanup process for preserved xattr (extended attribute) entries contains logic errors where the last pointer is not correctly shifted by one unit after an array entry is cleaned up. Additionally, the current logic fails to clean up the first entry when the xh count variable is equal to 1.

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

Related Identifiers

CVE-2026-43168

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-6.17

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

Rootio-Linux

References · 18

• https://cve.org/CVERecord?id=CVE-2026-43168 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-43168 · Vendor Advisory
• https://git.kernel.org/stable/c/bb273b68c1719c2925e05557f7e7099edb066680 · Patch
• https://git.kernel.org/stable/c/3bdc3766aafb052aef4baadef455a84c1c0a059d · Patch
• https://git.kernel.org/stable/c/8ff329353134280b203cb2bce95311cb8f7cbd8a · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-43168 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-43168 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43168 · Vendor Advisory
• https://git.kernel.org/stable/c/b2952dbeac2c3c527cb0519d5ffaeb95b062466a · Patch
• https://ubuntu.com/security/CVE-2026-43168 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2026-43168 · Vendor Advisory
• https://git.kernel.org/stable/c/c44d86ca949cb1e5566ad14510cc26fa1a17e2d8 · Patch
• https://git.kernel.org/stable/c/02acc9f72365e50eb45a56b7dacb9114ca3b503c · Patch
• https://git.kernel.org/stable/c/2f4daccd9d9b8b2952df7878df8c2e8ba6439398 · Patch
• https://git.kernel.org/stable/c/5138c936c2c82c9be8883921854bc6f7e1177d8c · Patch