FKIE_CVE-2026-46080

Vulnerability from fkie_nvd - Published: 2026-05-27 14:17 - Updated: 2026-05-27 14:48
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: ocfs2: split transactions in dio completion to avoid credit exhaustion During ocfs2 dio operations, JBD2 may report warnings via following call trace: ocfs2_dio_end_io_write ocfs2_mark_extent_written ocfs2_change_extent_flag ocfs2_split_extent ocfs2_try_to_merge_extent ocfs2_extend_rotate_transaction ocfs2_extend_trans jbd2__journal_restart start_this_handle output: JBD2: kworker/6:2 wants too many credits credits:5450 rsv_credits:0 max:5449 To prevent exceeding the credits limit, modify ocfs2_dio_end_io_write() to handle extents in a batch of transaction. Additionally, relocate ocfs2_del_inode_from_orphan(). The orphan inode should only be removed from the orphan list after the extent tree update is complete. This ensures that if a crash occurs in the middle of extent tree updates, we won't leave stale blocks beyond EOF. This patch also changes the logic for updating the inode size and removing orphan, making it similar to ext4_dio_write_end_io(). Both operations are performed only when everything looks good. Finally, thanks to Jans and Joseph for providing the bug fix prototype and suggestions.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/069c3fb310e9336cf48cfdf8748a32c29fd0193d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3c636a3edca9c3f180b3079f94fe7e115730d9c6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/886f97fa59d0bbfa9859fb1a66dd9e014b522d89
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d647c5b2fbf81560818dacade360abc8c00a9665
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ea5bb1d20da756e4f41a48dad42b2e7d6e73f71e
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: split transactions in dio completion to avoid credit exhaustion\n\nDuring ocfs2 dio operations, JBD2 may report warnings via following\ncall trace:\nocfs2_dio_end_io_write\n ocfs2_mark_extent_written\n  ocfs2_change_extent_flag\n   ocfs2_split_extent\n    ocfs2_try_to_merge_extent\n     ocfs2_extend_rotate_transaction\n      ocfs2_extend_trans\n       jbd2__journal_restart\n        start_this_handle\n         output: JBD2: kworker/6:2 wants too many credits credits:5450 rsv_credits:0 max:5449\n\nTo prevent exceeding the credits limit, modify ocfs2_dio_end_io_write() to\nhandle extents in a batch of transaction.\n\nAdditionally, relocate ocfs2_del_inode_from_orphan().  The orphan inode\nshould only be removed from the orphan list after the extent tree update\nis complete.  This ensures that if a crash occurs in the middle of extent\ntree updates, we won\u0027t leave stale blocks beyond EOF.\n\nThis patch also changes the logic for updating the inode size and removing\norphan, making it similar to ext4_dio_write_end_io().  Both operations are\nperformed only when everything looks good.\n\nFinally, thanks to Jans and Joseph for providing the bug fix prototype and\nsuggestions."
    }
  ],
  "id": "CVE-2026-46080",
  "lastModified": "2026-05-27T14:48:03.013",
  "metrics": {},
  "published": "2026-05-27T14:17:29.397",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/069c3fb310e9336cf48cfdf8748a32c29fd0193d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3c636a3edca9c3f180b3079f94fe7e115730d9c6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/886f97fa59d0bbfa9859fb1a66dd9e014b522d89"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d647c5b2fbf81560818dacade360abc8c00a9665"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ea5bb1d20da756e4f41a48dad42b2e7d6e73f71e"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.