PT-2026-39060 · Linux · Linux Kernel

Published 2026-05-08 · Updated 2026-05-15 · CVE-2026-43399

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 reference leak exists in the amdgpu userq wait ioctl() function. The issue occurs when the ioctl is aborted because the output array is too small, failing to drop references to the syncobj and timeline fence.

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

Related Identifiers

CVE-2026-43399

Affected Products

Linux Kernel

References · 13

• https://ubuntu.com/security/CVE-2026-43399 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43399 · Vendor Advisory
• https://git.kernel.org/stable/c/49abfa812617a7f2d0132c70d23ac98b389c6ec1 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-43399 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43399 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-43399 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-43399 · Vendor Advisory
• https://git.kernel.org/stable/c/762f47e2b824383d5be65eee2c40a1269b7d50c8 · Patch
• https://git.kernel.org/stable/c/5409247d41f372bec5b141ef599f2d9f5e81b746 · Patch
• https://twitter.com/CVEnew/status/2052767682546786630 · Twitter Post
• https://twitter.com/infoflowcloud/status/2052769497585521146 · Twitter Post
• https://git.kernel.org/linus/49abfa812617a7f2d0132c70d23ac98b389c6ec1 · Note
• https://twitter.com/hetmehtaa/status/2055151398283837677 · Twitter Post