Description
In the Linux kernel, the following vulnerability has been resolved:

vhost-scsi: flush backend after device ioctls

vhost-scsi translates guest response descriptors into userspace iovecs
when commands are submitted. Target-core completes those commands
asynchronously, so VHOST_SET_MEM_TABLE can replace the memory table while
an in-flight command still retains response iovecs translated through the
old table.

If the old mapping is reused after VHOST_SET_MEM_TABLE returns, command
completion can write the response to an unrelated userspace object.

Flush the vhost-scsi backend after vhost_dev_ioctl() handles a device
ioctl. This waits for in-flight commands that can still use the old
response iovecs before the ioctl returns.
Published: 2026-09-24
Score: n/a
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
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History

Thu, 24 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: vhost-scsi: flush backend after device ioctls vhost-scsi translates guest response descriptors into userspace iovecs when commands are submitted. Target-core completes those commands asynchronously, so VHOST_SET_MEM_TABLE can replace the memory table while an in-flight command still retains response iovecs translated through the old table. If the old mapping is reused after VHOST_SET_MEM_TABLE returns, command completion can write the response to an unrelated userspace object. Flush the vhost-scsi backend after vhost_dev_ioctl() handles a device ioctl. This waits for in-flight commands that can still use the old response iovecs before the ioctl returns.
Title vhost-scsi: flush backend after device ioctls
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-09-24T16:02:14.457Z

Reserved: 2026-09-18T17:59:28.788Z

Link: CVE-2026-93782

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-24T17:17:10.793

Modified: 2026-09-24T17:17:10.793

Link: CVE-2026-93782

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-24T19:45:17Z

Weaknesses

No weakness.