Vulnerability Database

318,756

Total vulnerabilities in the database

CVE-2025-38074

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.

  • Published: Jun 18, 2025
  • Updated: Dec 18, 2025
  • CVE: CVE-2025-38074
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 5.5
  • AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

No CWE or OWASP classifications available.

Software From Fixed in
linux / linux_kernel - 5.10.240
linux / linux_kernel 5.11 5.15.189
linux / linux_kernel 5.16 6.1.146
linux / linux_kernel 6.2 6.6.93
linux / linux_kernel 6.7 6.12.31
linux / linux_kernel 6.13 6.14.9
linux / linux_kernel 6.15-rc1 6.15-rc1.x
linux / linux_kernel 6.15-rc2 6.15-rc2.x
linux / linux_kernel 6.15-rc3 6.15-rc3.x
debian / debian_linux 11.0 11.0.x