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vduse: hold vduse_lock across IDR lookup in open path

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: vduse: hold vduse_lock across IDR lookup in open path vduse_dev_open() looks up struct vduse_dev through the IDR and then acquires dev->lock only after vduse_lock has been dropped. This leaves a window where a concurrent VDUSE_DESTROY_DEV can remove the same object from the IDR and free it before the open path locks the device, leading to a use-after-free. Close this race by keeping vduse_lock held until dev->lock has been acquired in the open path, matching the lock ordering already used by the destroy path.

Announced Source revision 1
Original source ↗

CVE-2026-74313

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-2026-74313

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": "c8a6153b6c59d95c0e091f053f6f180952ade91e",
        "lessThan": "35483c5306e09b3190ff937089d404a78012695c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c8a6153b6c59d95c0e091f053f6f180952ade91e",
        "lessThan": "5c1560be8aa6849356455af67518d35c551cbd95",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c8a6153b6c59d95c0e091f053f6f180952ade91e",
        "lessThan": "93ed4692f2299a40346025979f40e4a9b7b33af7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c8a6153b6c59d95c0e091f053f6f180952ade91e",
        "lessThan": "d94e2947203aead590fd63f667d316d4475d65af",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c8a6153b6c59d95c0e091f053f6f180952ade91e",
        "lessThan": "a2d0a57538fd0b3b3ab75d64bb64f4cd2fab13a2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c8a6153b6c59d95c0e091f053f6f180952ade91e",
        "lessThan": "79e12c891940b0c4c75881b7fd82a8cbb8ac97be",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c8a6153b6c59d95c0e091f053f6f180952ade91e",
        "lessThan": "e440e077748939839d9f76e24383b76b785f80ce",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/vdpa/vdpa_user/vduse_dev.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.15"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.15",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.15.212",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.178",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.145",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.97",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.40",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.5",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/vdpa/vdpa_user/vduse_dev.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-74313

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#33093 · Revision 1
Added to Heist Feed
Publisher date
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