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Vulnerability · Published May 20, 2025 · Assigned by Linux

CVE-2025-37906ublk: fix race between io_uring_cmd_complete_in_task and ublk_cancel_cmd

High 7.8

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 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 91.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: ublk: fix race between io_uring_cmd_complete_in_task and ublk_cancel_cmd ublk_cancel_cmd() calls io_uring_cmd_done() to complete uring_cmd, but we may have scheduled task work via io_uring_cmd_complete_in_task() for dispatching request, then kernel crash can be triggered. Fix it by not trying to canceling the command if ublk block request is started.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:13linux6.12.115-2DEBIAN-CVE-2025-37906
Debian:14linux6.16.3-1DEBIAN-CVE-2025-37906
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-aws-6.146.14.0-1009.9~24.04.1USN-7665-2
Ubuntu:24.04:LTSlinux-aws-6.146.14.0-1009.9~24.04.1UBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2025-37906
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-gcp-6.146.14.0-1011.11~24.04.1UBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1035.38USN-8781-1
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1035.38UBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-oem-6.146.14.0-1007.7UBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-oem-6.146.14.0-1007.7USN-7650-1
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-oracle-6.146.14.0-1009.9~24.04.1UBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-riscv-6.146.14.0-24.24.1~24.04.1UBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-37906
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2025-37906
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2025-37906

Affected products (as reported)

VendorProductVersions
Linux Linux 216c8f5ef0f209a3797292c487bdaa6991ab4b92 – before 346b7d74c612234dae0878892682b9722e7c04c8216c8f5ef0f209a3797292c487bdaa6991ab4b92 – before fb2eb9ddf556f93fef45201e1f9d2b8674bcc975216c8f5ef0f209a3797292c487bdaa6991ab4b92 – before f40139fde5278d81af3227444fd6e76a76b9506d
Linux Linux 6.7

References