CVE-2026-68103

CVE CVE-2026-68103EUVD EUVD-2026-55484Published 2026-08-10T11:58:19.000ZLast changed 2026-08-12T23:58:33.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: reject mapping a reserved doorbell to a new queue When creating an user-queue, the user space provides a doorbell BO handle and an offset within the bo to obtain a doorbell. However current implementation using xa_store_irq() to store a doorbell, which allows a later queue created with the same BO and offset parameters to overwrite an existing queue and doorbell mapping. This can cause problems like misrouting fence IRQ processing to a wrong queue, and mislead the cleanup process of one queue erasing the mapping of another queue. This commit fixes this issue by replacing xa_store_irq with xa_insert_irq, which rejects mapping a reserved doorbell to a newly created queue (cherry picked from commit 6244eae22966350db52faf9c1369d3b2ffc5de4e)

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 7.1.6; patch: 0; patch: 7.2-rc2; 8949843762631d9d0fc526dfb61a272dca29fc6f <a609b6278bf3cde17eeee6620091465521e4b02c; 6.16; 8949843762631d9d0fc526dfb61a272dca29fc6f <1050d258c7c56066d2dcaedf8d0ef66364062adc

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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