PT-2026-38969 · Linux · Linux Kernel

Published 2026-05-08 · Updated 2026-05-21 · CVE-2026-43318

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 A synchronization bug exists in the amdgpu dma buf move notify function within the drm/amdgpu component. The issue occurs when a buffer object (BO) is moved by one process, requiring other processes to update their page tables. Due to incorrect ticket usage, the amdgpu vm handle moved() function may trigger page table updates prematurely. In scenarios involving multiple GPUs without P2P PCI support, this can lead to a page fault if a job is still running on a GPU while the page table is updated.

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

Related Identifiers

CVE-2026-43318

Affected Products

Linux Kernel

References · 19

• https://nvd.nist.gov/vuln/detail/CVE-2026-43318 · Security Note
• https://ubuntu.com/security/CVE-2026-43318 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43318 · Vendor Advisory
• https://git.kernel.org/stable/c/82a7ea35a1526bef8ae170c33ff80e5db7728961 · Patch
• https://git.kernel.org/stable/c/b18fc0ab837381c1a6ef28386602cd888f2d9edf · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-43318 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-43318 · Security Note
• https://git.kernel.org/stable/c/89a9389ad70d3c69538e59d87df67d407aef4c26 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43318 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-43318 · Vendor Advisory
• https://git.kernel.org/stable/c/3307459eb3583115264421e859858d1f90f3694a · Patch
• https://git.kernel.org/linus/b18fc0ab837381c1a6ef28386602cd888f2d9edf · Note
• https://t.me/cveNotify/163655 · Telegram Post
• https://twitter.com/windowsforum/status/2053779328463184320 · Twitter Post
• https://twitter.com/CVEnew/status/2053131462254412243 · Twitter Post