Tracker / CVE-2025-38074
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.
Prodotti e versioni affette
| debian | debian_linux |
|---|---|
| linux | linux_kernel |
| 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 · 6.13 → 6.14.9 |
| linux | linux_kernel · 6.2 → 6.6.93 |
| linux | linux_kernel · 6.7 → 6.12.31 |