PT-2026-36427 · Linux+3 · Linux+128

Published 2026-05-01 · Updated 2026-05-11 · CVE-2026-43010

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 Linux kernel where bpf kprobe multi link attach() fails to validate if a program being attached has the sleepable flag set. Because kprobe.multi programs operate within an atomic/RCU context and are prohibited from sleeping, this flaw allows sleepable helpers, such as bpf copy from user(), to be invoked from a non-sleepable context. This results in a "sleeping function called from invalid context" error, which can lead to system instability or downtime.

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

Related Identifiers

CVE-2026-43010

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-Aws-6.8

Linux-Aws-Fips

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-6.8

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-Fde-6.8

Linux-Azure-Fips

Linux-Azure-Nvidia

Linux-Azure-Nvidia-6.14

Linux-Fips

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-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-5.19

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-6.8

Linux-Intel-5.13

Linux-Intel-Iot-Realtime

Linux-Lowlatency

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-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-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-5.19

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 Kernel

References · 13

• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43010 · Vendor Advisory
• https://git.kernel.org/stable/c/eb7024bfcc5f68ed11ed9dd4891a3073c15f04a8 · Patch
• https://git.kernel.org/stable/c/dc9a060d76c12b23c5f378ee115d5e5d03d8bbf3 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43010 · Vendor Advisory
• https://git.kernel.org/stable/c/f952157e695fd434bdc05af63a703bb082a78717 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-43010 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-43010 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-43010 · Security Note
• https://ubuntu.com/security/CVE-2026-43010 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-43010 · Vendor Advisory
• https://docs.bell-sw.com/security/cves/CVE-2026-43010 · Note
• https://git.kernel.org/linus/eb7024bfcc5f68ed11ed9dd4891a3073c15f04a8 · Note
• https://twitter.com/windowsforum/status/2053762442526597425 · Twitter Post