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CVE-2026-31702 f2fs: fix use-after-free of sbi in f2fs_compress_write_end_io()

🗓️ 01 May 2026 13:56:01Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 33 Views

Fix use-after-free of sbi in f2fs_compress_write_end_io by delaying dec_page_count until after page_array_free.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/f2fs/compress.c"
    ],
    "versions": [
      {
        "version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3",
        "lessThan": "57bc678f36ac03281e877c6b84877b43f964143f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3",
        "lessThan": "ef57cd3329b40c739b9a2e1a8a21ecc4171c6280",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3",
        "lessThan": "f5154cf3ce1c8193f0c1891d3769f62740cfe6fe",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3",
        "lessThan": "c76cf339b87975ae5b2c06d2d774d5667d25a12a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3",
        "lessThan": "2c97dcb6147c8f7f25c629b93be1e69617de5d4a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3",
        "lessThan": "39d4ee19c1e7d753dd655aebee632271b171f43a",
        "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/f2fs/compress.c"
    ],
    "versions": [
      {
        "version": "5.6",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.6",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.175",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.136",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.84",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.25",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.2",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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