github - ghsa-mjvq-c742-r5cx

GHSA-MJVQ-C742-R5CX

Vulnerability from github – Published: 2025-12-30 15:30 – Updated: 2025-12-30 15:30

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50839"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-30T13:15:58Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\njbd2: fix potential buffer head reference count leak\n\nAs in \u0027jbd2_fc_wait_bufs\u0027 if buffer isn\u0027t uptodate, will return -EIO without\nupdate \u0027journal-\u003ej_fc_off\u0027. But \u0027jbd2_fc_release_bufs\u0027 will release buffer head\nfrom \u2018j_fc_off - 1\u2019 if \u0027bh\u0027 is NULL will terminal release which will lead to\nbuffer head buffer head reference count leak.\nTo solve above issue, update \u0027journal-\u003ej_fc_off\u0027 before return -EIO.",
  "id": "GHSA-mjvq-c742-r5cx",
  "modified": "2025-12-30T15:30:27Z",
  "published": "2025-12-30T15:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50839"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/68ed9c76b2affd47177b92495446abb7262d0ef7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7a33dde572fceb45d02d188e0213c47059401c93"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9b073d73725366d886b711b74e058c02f51e7a0e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e0d5fc7a6d80ac2406c7dfc6bb625201d0250a8a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7385c868ee038d6a0cb0e85c22d2741e7910fd5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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

Vulnerability from cvelistv5 – Published: 2025-12-30 12:10 – Updated: 2025-12-30 12:10

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

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/7a33dde572fceb45d…
	https://git.kernel.org/stable/c/e7385c868ee038d6a…
	https://git.kernel.org/stable/c/68ed9c76b2affd471…
	https://git.kernel.org/stable/c/9b073d73725366d88…
	https://git.kernel.org/stable/c/e0d5fc7a6d80ac240…

Impacted products

Vendor

Product

Version

Linux

Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7a33dde572fceb45d02d188e0213c47059401c93 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < e7385c868ee038d6a0cb0e85c22d2741e7910fd5 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 68ed9c76b2affd47177b92495446abb7262d0ef7 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9b073d73725366d886b711b74e058c02f51e7a0e (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < e0d5fc7a6d80ac2406c7dfc6bb625201d0250a8a (git)

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)

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/jbd2/journal.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7a33dde572fceb45d02d188e0213c47059401c93",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "e7385c868ee038d6a0cb0e85c22d2741e7910fd5",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "68ed9c76b2affd47177b92495446abb7262d0ef7",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "9b073d73725366d886b711b74e058c02f51e7a0e",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "e0d5fc7a6d80ac2406c7dfc6bb625201d0250a8a",
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/jbd2/journal.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.150",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.150",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.75",
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                },
                {
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                  "versionEndExcluding": "5.19.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.3",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.1",
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        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-30T12:10:58.406Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/7a33dde572fceb45d02d188e0213c47059401c93"
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        },
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          "url": "https://git.kernel.org/stable/c/68ed9c76b2affd47177b92495446abb7262d0ef7"
        },
        {
          "url": "https://git.kernel.org/stable/c/9b073d73725366d886b711b74e058c02f51e7a0e"
        },
        {
          "url": "https://git.kernel.org/stable/c/e0d5fc7a6d80ac2406c7dfc6bb625201d0250a8a"
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      ],
      "title": "jbd2: fix potential buffer head reference count leak",
      "x_generator": {
        "engine": "bippy-1.2.0"
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    }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50839",
    "datePublished": "2025-12-30T12:10:58.406Z",
    "dateReserved": "2025-12-30T12:06:07.133Z",
    "dateUpdated": "2025-12-30T12:10:58.406Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-MJVQ-C742-R5CX

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

Tags

Sightings

Nomenclature