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CVE-2025-71123 ext4: fix string copying in parse_apply_sb_mount_options()

🗓️ 14 Jan 2026 15:06:09Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 21 Views

Fix ext4 string copying in parse_apply_sb_mount_options to prevent buffer overflow when handling mount options.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/ext4/super.c"
    ],
    "versions": [
      {
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        "lessThan": "52ac96c4a2dd7bc47666000440b0602d9742e820",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e651294218d2684302ee5ed95ccf381646f3e5b4",
        "lessThan": "6e37143560e37869d51b7d9e0ac61fc48895f8a0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "01829af7656b56d83682b3491265d583d502e502",
        "lessThan": "902ca2356f1e3ec5355c5808ad5d3f9d0095b0cc",
        "status": "affected",
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      },
      {
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        "status": "affected",
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      },
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      {
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        "status": "affected",
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      {
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      },
      {
        "version": "a6e94557cd05adc82fae0400f6e17745563e5412",
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      },
      {
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      },
      {
        "version": "6.1.158",
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        "status": "affected",
        "versionType": "semver"
      },
      {
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        "status": "affected",
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      },
      {
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        "status": "affected",
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      },
      {
        "version": "5.4.301",
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        "status": "affected",
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      },
      {
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      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/ext4/super.c"
    ],
    "versions": [
      {
        "version": "6.18",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.18",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.248",
        "lessThanOrEqual": "5.10.*",
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        "versionType": "semver"
      },
      {
        "version": "6.1.160",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.120",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.64",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.3",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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