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vhost-scsi: flush backend after device ioctls

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-93782

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-93782

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "057cbf49a1f08297877e46c82f707b1bfea806a8",
        "lessThan": "6436411203d8c702ffc055700f1a6bde488ff681",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "057cbf49a1f08297877e46c82f707b1bfea806a8",
        "lessThan": "cec088285adcc7ae23c119b6bbdb22270dc2de8f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "057cbf49a1f08297877e46c82f707b1bfea806a8",
        "lessThan": "e0bf6bed528693a6b32439ab122b34a34b66d96f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "057cbf49a1f08297877e46c82f707b1bfea806a8",
        "lessThan": "be2636e1b21fe860db918152abf2932638d06ed7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "057cbf49a1f08297877e46c82f707b1bfea806a8",
        "lessThan": "981c97d09c6b9560bb12dcc41f11ce59b1a48e97",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "057cbf49a1f08297877e46c82f707b1bfea806a8",
        "lessThan": "6c1b802e36b05ebd9d41686c4dce6f06966af469",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "057cbf49a1f08297877e46c82f707b1bfea806a8",
        "lessThan": "22598f55a4c2b510b3df5e69e563387a963222ae",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/vhost/scsi.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.6"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.6",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.271",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.222",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.189",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.158",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.111",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.53",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/vhost/scsi.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-93782

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#8260 · Revision 1
Added to Heist Feed
Publisher date
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