CVE-2026-98082 (GCVE-0-2026-98082)
Vulnerability from cvelistv5
Published
2026-09-25 10:24
Modified
2026-10-19 09:13
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix the possible bioc_list memory leak during error There are two possible ways to leak bioc memory on btrfs_ordered_extent::bioc_list: - An error occurred for btrfs_insert_one_raid_extent() Then the function btrfs_insert_raid_extent() immediately return without freeing any bioc in the bioc_list. - An ordered extent hit an IO error In that case the ordered extent will have BTRFS_ORDERED_IOERR set, and skip the call on btrfs_insert_raid_extent() completely. Fix the problem by: - Introduce a new helper, btrfs_cleanup_ordered_bioc_list() Which will remove all bioc from the bioc_list, and release the bioc. - Call the above helper for btrfs_insert_raid_extent() So that the cleanup helper is always called no matter what. - Call the above helper for btrfs_finish_one_ordered() This is called just before the final release on the ordered extent. This was reported by Sashiko when reviewing another patch.
References
Impacted products
Vendor Product Version
Linux Linux Version: ab69bf6f8970c09d3735c25094e9471d54365282
Version: 02c372e1f016e5113217597ab37b399c4e407477
Version: 02c372e1f016e5113217597ab37b399c4e407477
Version: 02c372e1f016e5113217597ab37b399c4e407477
Version: 02c372e1f016e5113217597ab37b399c4e407477
Version: 6.6.130   ≤
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "fs/btrfs/inode.c",
            "fs/btrfs/raid-stripe-tree.c",
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      "cpeApplicability": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix the possible bioc_list memory leak during error\n\nThere are two possible ways to leak bioc memory on\nbtrfs_ordered_extent::bioc_list:\n\n- An error occurred for btrfs_insert_one_raid_extent()\n  Then the function btrfs_insert_raid_extent() immediately return\n  without freeing any bioc in the bioc_list.\n\n- An ordered extent hit an IO error\n  In that case the ordered extent will have BTRFS_ORDERED_IOERR set, and\n  skip the call on btrfs_insert_raid_extent() completely.\n\nFix the problem by:\n\n- Introduce a new helper, btrfs_cleanup_ordered_bioc_list()\n  Which will remove all bioc from the bioc_list, and release the bioc.\n\n- Call the above helper for btrfs_insert_raid_extent()\n  So that the cleanup helper is always called no matter what.\n\n- Call the above helper for btrfs_finish_one_ordered()\n  This is called just before the final release on the ordered extent.\n\nThis was reported by Sashiko when reviewing another patch."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:13:34.616Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d043c43d2b4ebcd75ee7f907948ef2847306d6b2"
        },
        {
          "url": "https://git.kernel.org/stable/c/83f0c973cffb184d019390ffdb5d31de5c85bc61"
        },
        {
          "url": "https://git.kernel.org/stable/c/1b4d4e890c2c85d0f6365b5a08c48b4bbf85deb0"
        },
        {
          "url": "https://git.kernel.org/stable/c/bb4da45766d16503821f167054db76b735d89e94"
        },
        {
          "url": "https://git.kernel.org/stable/c/afbe73778338e6d1ac8c4486fbdf33f0cc1f2624"
        }
      ],
      "title": "btrfs: fix the possible bioc_list memory leak during error",
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98082",
    "datePublished": "2026-09-25T10:24:18.685Z",
    "dateReserved": "2026-09-25T10:19:56.075Z",
    "dateUpdated": "2026-10-19T09:13:34.616Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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