High 7.8Published Sep 24, 2026

CVE-2026-93782vhost-scsi: flush backend after device ioctls

Updated under an hour ago (Oct 28, 2026, 8:40 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Oct 3, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 057cbf49a1f08297877e46c82f707b1bfea806a8 before 6436411203d8c702ffc055700f1a6bde488ff681; from 057cbf49a1f08297877e46c82f707b1bfea806a8 before cec088285adcc7ae23c119b6bbdb22270dc2de8f; from 057cbf49a1f08297877e46c82f707b1bfea806a8 before e0bf6bed528693a6b32439ab122b34a34b66d96f; from 057cbf49a1f08297877e46c82f707b1bfea806a8 before be2636e1b21fe860db918152abf2932638d06ed7; from 057cbf49a1f08297877e46c82f707b1bfea806a8 before 981c97d09c6b9560bb12dcc41f11ce59b1a48e97; 057cbf49a1f08297877e46c82f707b1bfea806a8 builds before 6c1b802e36b05ebd9d41686c4dce6f06966af469; from 057cbf49a1f08297877e46c82f707b1bfea806a8 before 22598f55a4c2b510b3df5e69e563387a963222ae	CNA record

References

References

https://git.kernel.org/stable/c/6436411203d8c702ffc055700f1a6bde488ff681
https://git.kernel.org/stable/c/cec088285adcc7ae23c119b6bbdb22270dc2de8f
https://git.kernel.org/stable/c/e0bf6bed528693a6b32439ab122b34a34b66d96f
https://git.kernel.org/stable/c/be2636e1b21fe860db918152abf2932638d06ed7
https://git.kernel.org/stable/c/981c97d09c6b9560bb12dcc41f11ce59b1a48e97
https://git.kernel.org/stable/c/6c1b802e36b05ebd9d41686c4dce6f06966af469
https://git.kernel.org/stable/c/22598f55a4c2b510b3df5e69e563387a963222ae

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.