PT-2026-36370 · Linux+2 · Linux+91

Claude · Published 2026-05-01 · Updated 2026-05-23 · CVE-2026-31735

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:C/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 iommupt component where the unmap process may unmap more than requested if the ending point falls within a large or contiguous Input/Output Page Table Entry (IOPTE). In such cases, the gather process only flushes the range specifically requested for unmapping rather than the entire unmapped range, leading to a short invalidation.

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

Related Identifiers

CVE-2026-31735

Affected Products

Linux

Linux-Allwinner-5.19

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-6.2

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-6.2

Linux-Azure-6.5

Linux-Azure-Edge

Linux-Azure-Fde

Linux-Azure-Fde-5.19

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-6.2

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-6.2

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-6.5

Linux-Oem-6.8

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-6.5

Linux-Raspi-Realtime

Linux-Raspi2

Linux-Realtime

Linux-Realtime-6.14

Linux-Riscv

Linux-Riscv-5.11

Linux-Riscv-5.19

Linux-Riscv-5.8

Linux-Riscv-6.14

Linux-Riscv-6.5

Linux-Starfive-5.19

Linux-Starfive-6.2

Linux-Starfive-6.5

Linux Kernel

References · 11

• https://ubuntu.com/security/CVE-2026-31735 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-31735 · Security Note
• https://git.kernel.org/stable/c/ee6e69d032550687a3422504bfca3f834c7b5061 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-31735 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31735 · Vendor Advisory
• https://git.kernel.org/stable/c/50ecd96a28f712f8b682c0441f4cb9b086d28816 · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-31735 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31735 · Vendor Advisory
• https://t.me/cveNotify/162584 · Telegram Post
• https://git.kernel.org/linus/ee6e69d032550687a3422504bfca3f834c7b5061 · Note
• https://twitter.com/DFIR_Lab/status/2057996260473201024 · Twitter Post