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

Vulnerability from cvelistv5 – Published: 2025-12-30 12:10 – Updated: 2026-05-11 19:26
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 CPE status
Linux Linux Affected: ff780b91efe901b8eecd8114785abae5341820ad , < 7a33dde572fceb45d02d188e0213c47059401c93 (git)
Affected: ff780b91efe901b8eecd8114785abae5341820ad , < e7385c868ee038d6a0cb0e85c22d2741e7910fd5 (git)
Affected: ff780b91efe901b8eecd8114785abae5341820ad , < 68ed9c76b2affd47177b92495446abb7262d0ef7 (git)
Affected: ff780b91efe901b8eecd8114785abae5341820ad , < 9b073d73725366d886b711b74e058c02f51e7a0e (git)
Affected: ff780b91efe901b8eecd8114785abae5341820ad , < e0d5fc7a6d80ac2406c7dfc6bb625201d0250a8a (git)
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Linux Linux Affected: 5.10
Unaffected: 0 , < 5.10 (semver)
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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{
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          "product": "Linux",
          "programFiles": [
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      "providerMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50839",
    "datePublished": "2025-12-30T12:10:58.406Z",
    "dateReserved": "2025-12-30T12:06:07.133Z",
    "dateUpdated": "2026-05-11T19:26:06.678Z",
    "state": "PUBLISHED"
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    "redhat_vex": {
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      "cve": "CVE-2022-50839",
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      "product_status:fixed": "201",
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      "version": "3"
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      "cve": "CVE-2022-50839",
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      "title": "SUSE CVE CVE-2022-50839",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50839.json",
      "version": "27"
    }
  }
}



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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

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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.


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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.