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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 981c97d09c6b9560bb12dcc41f11ce59b1a48e97
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 6c1b802e36b05ebd9d41686c4dce6f06966af469
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 22598f55a4c2b510b3df5e69e563387a963222ae
0 affected < 6.12.111
0 affected < 6.18.53
Linux Linux affected
Version Status Constraints
6.12.111 unaffected ≤ 6.12.*
6.18.53 unaffected ≤ 6.18.*
7.2 unaffected ≤ *

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Fixes

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References
Link Providers
https://git.kernel.org/stable/c/22598f55a4c2b510b3df5e69e563387a963222ae cve-icon
https://git.kernel.org/stable/c/6c1b802e36b05ebd9d41686c4dce6f06966af469 cve-icon
https://git.kernel.org/stable/c/981c97d09c6b9560bb12dcc41f11ce59b1a48e97 cve-icon
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
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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

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses

No weakness.