PT-2026-34918 · Linux · Linux Kernel

Published 2026-04-24 · Updated 2026-05-03 · CVE-2026-31566

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A use-after-free issue exists in the amdgpu amdkfd submit ib() function. The function submits a GPU job and receives a fence from amdgpu ib schedule() to wait for job completion. The code incorrectly releases the fence reference using dma fence put() before calling dma fence wait(). If dma fence put() releases the final reference, the fence may be freed before the wait operation occurs, leading to the use of freed memory.

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

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-31566

ECHO-30C7-82B1-CC14

Affected Products

Linux Kernel

References · 16

• https://security-tracker.debian.org/tracker/CVE-2026-31566 · Vendor Advisory
• https://git.kernel.org/stable/c/39820864eacd886f1a6f817414fb8f9ea3e9a2b4 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31566 · Vendor Advisory
• https://git.kernel.org/stable/c/bc7760c107dc08ef3e231d72c492e67b0a86848b · Patch
• https://cve.org/CVERecord?id=CVE-2026-31566 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31566 · Vendor Advisory
• https://git.kernel.org/stable/c/42d248726a0837640452b71c5a202ca3d35239ec · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-31566 · Security Note
• https://git.kernel.org/stable/c/138e42be35ff2ce6572ae744de851ea286cf3c69 · Patch
• https://git.kernel.org/stable/c/7150850146ebfa4ca998f653f264b8df6f7f85be · Patch
• https://ubuntu.com/security/CVE-2026-31566 · Vendor Advisory
• https://git.kernel.org/stable/c/e23602eb0779760544314ed3905fa6a89a4e4070 · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-31566 · Vendor Advisory
• https://docs.bell-sw.com/security/cves/CVE-2026-31566 · Note
• https://twitter.com/CVEnew/status/2047798619676590462 · Twitter Post