CVE-2022-50839 (GCVE-0-2022-50839)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:10 – Updated: 2025-12-30 12:10
VLAI?
Title
jbd2: fix potential buffer head reference count leak
Summary
In the Linux kernel, the following vulnerability has been resolved: jbd2: fix potential buffer head reference count leak As in 'jbd2_fc_wait_bufs' if buffer isn't uptodate, will return -EIO without update 'journal->j_fc_off'. But 'jbd2_fc_release_bufs' will release buffer head from ‘j_fc_off - 1’ if 'bh' is NULL will terminal release which will lead to buffer head buffer head reference count leak. To solve above issue, update 'journal->j_fc_off' before return -EIO.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7a33dde572fceb45d02d188e0213c47059401c93 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < e7385c868ee038d6a0cb0e85c22d2741e7910fd5 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 68ed9c76b2affd47177b92495446abb7262d0ef7 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9b073d73725366d886b711b74e058c02f51e7a0e (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < e0d5fc7a6d80ac2406c7dfc6bb625201d0250a8a (git)
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    Linux Linux Unaffected: 5.10.150 , ≤ 5.10.* (semver)
Unaffected: 5.15.75 , ≤ 5.15.* (semver)
Unaffected: 5.19.17 , ≤ 5.19.* (semver)
Unaffected: 6.0.3 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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          "programFiles": [
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        "dateUpdated": "2025-12-30T12:10:58.406Z",
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    "datePublished": "2025-12-30T12:10:58.406Z",
    "dateReserved": "2025-12-30T12:06:07.133Z",
    "dateUpdated": "2025-12-30T12:10:58.406Z",
    "state": "PUBLISHED"
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  • 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.



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