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Vulnerability · Published Aug 10, 2026 · Assigned by Linux

CVE-2026-68103drm/amdgpu: reject mapping a reserved doorbell to a new queue

High 7.1

In plain English

A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 4% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.1High
Exploit odds (30 days)0.2%top 95.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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)

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:14linux7.1.6-1DEBIAN-CVE-2026-68103
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-68103
Ubuntu:26.04:LTSlinuxno fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-68103
Ubuntu:26.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-68103
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-68103
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-68103
Ubuntu:26.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-68103
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-hwe-7.0no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-68103
Ubuntu:26.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-68103
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-68103
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-68103
Ubuntu:26.04:LTSlinux-oem-7.0no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-68103
Ubuntu:26.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-68103
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-68103
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-68103
Ubuntu:26.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-riscv-7.0no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-68103
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-68103
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-68103

Affected products (as reported)

VendorProductVersions
Linux Linux 8949843762631d9d0fc526dfb61a272dca29fc6f – before 1050d258c7c56066d2dcaedf8d0ef66364062adc8949843762631d9d0fc526dfb61a272dca29fc6f – before a609b6278bf3cde17eeee6620091465521e4b02c
Linux Linux 6.16

Weakness: CWE-662 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

References