CVE-2026-98083

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix transaction use-after-free in raid stripe insertion If allocation of a RAID stripe extent fails, btrfs_insert_one_raid_extent() aborts and ends the transaction before returning -ENOMEM. btrfs_finish_one_ordered(), the production caller through btrfs_insert_raid_extent(), still owns the transaction handle. It handles the error by aborting the transaction and then reaches the common exit path, which ends the transaction again. The premature end can free the handle and drop its transaction reference. Transaction cleanup can then free the transaction before the caller's second abort accesses the handle and transaction, resulting in use-after-free. Keep the abort at the failure site, but let the caller's common exit path end the transaction once, after it has finished using both objects.

Severity

HIGH

CVSS score

7.0 (v3.1)

Vulnerability status

Analyzed

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-09-25 11:17:37.860000

Last modified

2026-10-19 10:18:04.367000

View original CVE JSON

{
  "id": "CVE-2026-98083",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-25T11:17:37.860",
  "lastModified": "2026-10-19T10:18:04.367",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix transaction use-after-free in raid stripe insertion\n\nIf allocation of a RAID stripe extent fails,\nbtrfs_insert_one_raid_extent() aborts and ends the transaction before\nreturning -ENOMEM.\n\nbtrfs_finish_one_ordered(), the production caller through\nbtrfs_insert_raid_extent(), still owns the transaction handle. It handles\nthe error by aborting the transaction and then reaches the common exit\npath, which ends the transaction again.\n\nThe premature end can free the handle and drop its transaction reference.\nTransaction cleanup can then free the transaction before the caller's\nsecond abort accesses the handle and transaction, resulting in\nuse-after-free.\n\nKeep the abort at the failure site, but let the caller's common exit path\nend the transaction once, after it has finished using both objects."
    }
  ],
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      "affectedData": [
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          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "fs/btrfs/raid-stripe-tree.c"
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              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
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  "metrics": {
    "cvssMetricV31": [
      {
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        "type": "Secondary",
        "cvssData": {
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          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 7.0,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
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        "exploitabilityScore": 1.0,
        "impactScore": 5.9
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  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
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    }
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  "configurations": [
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}