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CVE-2026-74307 ext4: validate donor file superblock early in EXT4_IOC_MOVE_EXT

🗓️ 15 Aug 2026 05:58:07Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 3 Views

EXT4_IOC_MOVE_EXT deadlock when donor file on different filesystem; superblock check moved before lock acquisition.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-74307
15 Aug 202600:00
cve
debiancve
Debian CVE
CVE-2026-74307
15 Aug 202600:00
debiancve
euvd
EUVD
EUVD-2026-59454
15 Aug 202605:58
euvd
nvd
NVD
CVE-2026-74307
15 Aug 202606:22
nvd
osv
OSV
DEBIAN-CVE-2026-74307
15 Aug 202606:22
osv
ptsecurity
Positive Technologies
PT-2026-72743
15 Aug 202600:00
ptsecurity
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/ext4/ioctl.c"
    ],
    "versions": [
      {
        "version": "fcf6b1b729bcd23f2b49a84fb33ffbb44712ee6a",
        "lessThan": "74796e886ca39fcb0d3fd36ea6a39c62784ab6fb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fcf6b1b729bcd23f2b49a84fb33ffbb44712ee6a",
        "lessThan": "fb52013cad9e9b7d3a6a14ea1bcd841e41da7c6c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fcf6b1b729bcd23f2b49a84fb33ffbb44712ee6a",
        "lessThan": "c143957520c6c9b5cd72e0de8b52b814f0c576fe",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/ext4/ioctl.c"
    ],
    "versions": [
      {
        "version": "3.18",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.18",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.97",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.5",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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