Answer in brief
CVE-2025-38074 records a High severity (CVSS 8.8) vulnerability in vhost-scsi: protect vq->log_used with vq->mutex. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=057cbf49a1f08297877e46c82f707b1bfea806a8 <80cf68489681c165ded460930e391b1eb37b5f6f || >=057cbf49a1f08297877e46c82f707b1bfea806a8 <8312a1ccff1566f375191a89b9ba71b6eb48a8cd || >=057cbf49a1f08297877e46c82f707b1bfea806a8 <59614c5acf6688f7af3c245d359082c0e9e53117 || >=057cbf49a1f08297877e46c82f707b1bfea806a8 <ca85c2d0db5f8309832be45858b960d933c2131c || >=057cbf49a1f08297877e46c82f707b1bfea806a8 <bd8c9404e44adb9f6219c09b3409a61ab7ce3427 || >=057cbf49a1f08297877e46c82f707b1bfea806a8 <c0039e3afda29be469d29b3013d7f9bdee136834 || >=057cbf49a1f08297877e46c82f707b1bfea806a8 <f591cf9fce724e5075cc67488c43c6e39e8cbe27 | 80cf68489681c165ded460930e391b1eb37b5f6f, 8312a1ccff1566f375191a89b9ba71b6eb48a8cd, 59614c5acf6688f7af3c245d359082c0e9e53117, ca85c2d0db5f8309832be45858b960d933c2131c, bd8c9404e44adb9f6219c09b3409a61ab7ce3427, c0039e3afda29be469d29b3013d7f9bdee136834, f591cf9fce724e5075cc67488c43c6e39e8cbe27 |
| Linux/Linuxgeneric | 3.6 | Not reported |
Published upstream
Jun 18, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.