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Vulnerability · Published Jun 18, 2025 · Assigned by Linux

CVE-2025-38074vhost-scsi: protect vq->log_used with vq->mutex

High 8.8

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 10% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.2%top 89.8% 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: vhost-scsi: protect vq->log_used with vq->mutex The vhost-scsi completion path may access vq->log_base when vq->log_used is already set to false. vhost-thread QEMU-thread vhost_scsi_complete_cmd_work() -> vhost_add_used() -> vhost_add_used_n() if (unlikely(vq->log_used)) QEMU disables vq->log_used via VHOST_SET_VRING_ADDR. mutex_lock(&vq->mutex); vq->log_used = false now! mutex_unlock(&vq->mutex); QEMU gfree(vq->log_base) log_used() -> log_write(vq->log_base) Assuming the VMM is QEMU. The vq->log_base is from QEMU userpace and can be reclaimed via gfree(). As a result, this causes invalid memory writes to QEMU userspace. The control queue path has the same issue.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.147-1DSA-5973-1
Debian:12linux6.1.147-1DEBIAN-CVE-2025-38074
Debian:13linux6.12.32-1DEBIAN-CVE-2025-38074
Debian:14linux6.12.32-1DEBIAN-CVE-2025-38074
Ubuntu:22.04:LTSlinux5.15.0-156.166UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux5.15.0-156.166USN-7774-1
Ubuntu:24.04:LTSlinux6.8.0-100.100UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-aws5.15.0-1092.99USN-7774-1
Ubuntu:22.04:LTSlinux-aws5.15.0-1092.99UBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-aws6.8.0-1046.49UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-aws-6.146.14.0-1013.13~24.04.1USN-7769-3
Ubuntu:24.04:LTSlinux-aws-6.146.14.0-1013.13~24.04.1UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1046.49~22.04.1UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-azure5.15.0-1096.105USN-7775-2
Ubuntu:22.04:LTSlinux-azure5.15.0-1096.105UBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-azure6.8.0-1046.52UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1051.57~22.04.1UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1096.105.1UBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1046.53UBUNTU-CVE-2025-38074
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1046.53~22.04.1UBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-azure-nvidia-6.146.14.0-1007.7UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-gcp5.15.0-1092.101USN-7774-1
Ubuntu:22.04:LTSlinux-gcp5.15.0-1092.101UBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-gcp6.8.0-1047.50UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-gcp-6.146.14.0-1016.17~24.04.1USN-7769-1
Ubuntu:24.04:LTSlinux-gcp-6.146.14.0-1016.17~24.04.1UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1047.50~22.04.2UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-gke5.15.0-1089.95USN-7774-1
Ubuntu:22.04:LTSlinux-gke5.15.0-1089.95UBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-gke6.8.0-1043.48UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1075.83UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1075.83USN-7774-1
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1030.33UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-hwe-6.146.14.0-32.32~24.04.1USN-7769-3
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-100.100~22.04.1UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-ibm5.15.0-1086.89UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-ibm5.15.0-1086.89USN-7774-1
Ubuntu:24.04:LTSlinux-ibm6.8.0-1044.44UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1044.44~22.04.1UBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1087.93USN-7774-1
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1087.93UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-kvm5.15.0-1088.93UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-kvm5.15.0-1088.93USN-7774-4
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-156.166UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-156.166USN-7774-1
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-100.100.1UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-100.100.1~22.04.1UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1087.88UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1087.88USN-7774-1
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1046.49UBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1046.49~22.04.1UBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1046.49.1UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1045.45USN-7774-1
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1045.45UBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1020.20UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1034.34UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1034.34USN-7774-5
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-oem-6.146.14.0-1012.12USN-7771-1
Ubuntu:24.04:LTSlinux-oem-6.146.14.0-1012.12UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-oracle5.15.0-1090.96USN-7774-1
Ubuntu:22.04:LTSlinux-oracle5.15.0-1090.96UBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-oracle6.8.0-1043.44UBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-oracle-6.146.14.0-1013.13~24.04.1UBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-oracle-6.146.14.0-1013.13~24.04.1USN-7789-1
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1043.44~22.04.1UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-raspi5.15.0-1086.89USN-7774-1
Ubuntu:22.04:LTSlinux-raspi5.15.0-1086.89UBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-raspi6.8.0-1047.51UBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-riscv-6.146.14.0-32.32.1~24.04.1UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-100.100~22.04.1UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-38074
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1023.24UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1056.60UBUNTU-CVE-2025-38074
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1056.60USN-7774-1

Affected products (as reported)

VendorProductVersions
Linux Linux 057cbf49a1f08297877e46c82f707b1bfea806a8 – before 80cf68489681c165ded460930e391b1eb37b5f6f057cbf49a1f08297877e46c82f707b1bfea806a8 – before 8312a1ccff1566f375191a89b9ba71b6eb48a8cd057cbf49a1f08297877e46c82f707b1bfea806a8 – before 59614c5acf6688f7af3c245d359082c0e9e53117057cbf49a1f08297877e46c82f707b1bfea806a8 – before ca85c2d0db5f8309832be45858b960d933c2131c057cbf49a1f08297877e46c82f707b1bfea806a8 – before bd8c9404e44adb9f6219c09b3409a61ab7ce3427057cbf49a1f08297877e46c82f707b1bfea806a8 – before c0039e3afda29be469d29b3013d7f9bdee136834057cbf49a1f08297877e46c82f707b1bfea806a8 – before f591cf9fce724e5075cc67488c43c6e39e8cbe27
Linux Linux 3.6

References