CVE-2022-50126 (GCVE-0-2022-50126)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:02 – Updated: 2026-05-11 19:13
VLAI?
Title
jbd2: fix assertion 'jh->b_frozen_data == NULL' failure when journal aborted
Summary
In the Linux kernel, the following vulnerability has been resolved: jbd2: fix assertion 'jh->b_frozen_data == NULL' failure when journal aborted Following process will fail assertion 'jh->b_frozen_data == NULL' in jbd2_journal_dirty_metadata(): jbd2_journal_commit_transaction unlink(dir/a) jh->b_transaction = trans1 jh->b_jlist = BJ_Metadata journal->j_running_transaction = NULL trans1->t_state = T_COMMIT unlink(dir/b) handle->h_trans = trans2 do_get_write_access jh->b_modified = 0 jh->b_frozen_data = frozen_buffer jh->b_next_transaction = trans2 jbd2_journal_dirty_metadata is_handle_aborted is_journal_aborted // return false --> jbd2 abort <-- while (commit_transaction->t_buffers) if (is_journal_aborted) jbd2_journal_refile_buffer __jbd2_journal_refile_buffer WRITE_ONCE(jh->b_transaction, jh->b_next_transaction) WRITE_ONCE(jh->b_next_transaction, NULL) __jbd2_journal_file_buffer(jh, BJ_Reserved) J_ASSERT_JH(jh, jh->b_frozen_data == NULL) // assertion failure ! The reproducer (See detail in [Link]) reports: ------------[ cut here ]------------ kernel BUG at fs/jbd2/transaction.c:1629! invalid opcode: 0000 [#1] PREEMPT SMP CPU: 2 PID: 584 Comm: unlink Tainted: G W 5.19.0-rc6-00115-g4a57a8400075-dirty #697 RIP: 0010:jbd2_journal_dirty_metadata+0x3c5/0x470 RSP: 0018:ffffc90000be7ce0 EFLAGS: 00010202 Call Trace: <TASK> __ext4_handle_dirty_metadata+0xa0/0x290 ext4_handle_dirty_dirblock+0x10c/0x1d0 ext4_delete_entry+0x104/0x200 __ext4_unlink+0x22b/0x360 ext4_unlink+0x275/0x390 vfs_unlink+0x20b/0x4c0 do_unlinkat+0x42f/0x4c0 __x64_sys_unlink+0x37/0x50 do_syscall_64+0x35/0x80 After journal aborting, __jbd2_journal_refile_buffer() is executed with holding @jh->b_state_lock, we can fix it by moving 'is_handle_aborted()' into the area protected by @jh->b_state_lock.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 470decc613ab2048b619a01028072d932d9086ee , < 0f61c6dc4b714be9d79cf0782ca02ba01c1b7ac3 (git)
Affected: 470decc613ab2048b619a01028072d932d9086ee , < 6073389db83b903678a0920554fa19f5bdc51c48 (git)
Affected: 470decc613ab2048b619a01028072d932d9086ee , < fa5b65d39332fef7a11ae99cb1f0696012a61527 (git)
Affected: 470decc613ab2048b619a01028072d932d9086ee , < f7161d0da975adc234161cd0641d0e484f5ce375 (git)
Affected: 470decc613ab2048b619a01028072d932d9086ee , < e62f79827784f56499a50ea2e893c98317b5407b (git)
Affected: 470decc613ab2048b619a01028072d932d9086ee , < 731c1662d838fe954c6759e3ee43229b0d928fe4 (git)
Affected: 470decc613ab2048b619a01028072d932d9086ee , < ddd896792e1718cb84c96f3e618270589b6886dc (git)
Affected: 470decc613ab2048b619a01028072d932d9086ee , < 4a734f0869f970b8a9b65062ea40b09a5da9dba8 (git)
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Linux Linux Affected: 2.6.19
Unaffected: 0 , < 2.6.19 (semver)
Unaffected: 4.14.291 , ≤ 4.14.* (semver)
Unaffected: 4.19.256 , ≤ 4.19.* (semver)
Unaffected: 5.4.211 , ≤ 5.4.* (semver)
Unaffected: 5.10.137 , ≤ 5.10.* (semver)
Unaffected: 5.15.61 , ≤ 5.15.* (semver)
Unaffected: 5.18.18 , ≤ 5.18.* (semver)
Unaffected: 5.19.2 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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          "programFiles": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\njbd2: fix assertion \u0027jh-\u003eb_frozen_data == NULL\u0027 failure when journal aborted\n\nFollowing process will fail assertion \u0027jh-\u003eb_frozen_data == NULL\u0027 in\njbd2_journal_dirty_metadata():\n\n                   jbd2_journal_commit_transaction\nunlink(dir/a)\n jh-\u003eb_transaction = trans1\n jh-\u003eb_jlist = BJ_Metadata\n                    journal-\u003ej_running_transaction = NULL\n                    trans1-\u003et_state = T_COMMIT\nunlink(dir/b)\n handle-\u003eh_trans = trans2\n do_get_write_access\n  jh-\u003eb_modified = 0\n  jh-\u003eb_frozen_data = frozen_buffer\n  jh-\u003eb_next_transaction = trans2\n jbd2_journal_dirty_metadata\n  is_handle_aborted\n   is_journal_aborted // return false\n\n           --\u003e jbd2 abort \u003c--\n\n                     while (commit_transaction-\u003et_buffers)\n                      if (is_journal_aborted)\n                       jbd2_journal_refile_buffer\n                        __jbd2_journal_refile_buffer\n                         WRITE_ONCE(jh-\u003eb_transaction,\n\t\t\t\t\t\tjh-\u003eb_next_transaction)\n                         WRITE_ONCE(jh-\u003eb_next_transaction, NULL)\n                         __jbd2_journal_file_buffer(jh, BJ_Reserved)\n        J_ASSERT_JH(jh, jh-\u003eb_frozen_data == NULL) // assertion failure !\n\nThe reproducer (See detail in [Link]) reports:\n ------------[ cut here ]------------\n kernel BUG at fs/jbd2/transaction.c:1629!\n invalid opcode: 0000 [#1] PREEMPT SMP\n CPU: 2 PID: 584 Comm: unlink Tainted: G        W\n 5.19.0-rc6-00115-g4a57a8400075-dirty #697\n RIP: 0010:jbd2_journal_dirty_metadata+0x3c5/0x470\n RSP: 0018:ffffc90000be7ce0 EFLAGS: 00010202\n Call Trace:\n  \u003cTASK\u003e\n  __ext4_handle_dirty_metadata+0xa0/0x290\n  ext4_handle_dirty_dirblock+0x10c/0x1d0\n  ext4_delete_entry+0x104/0x200\n  __ext4_unlink+0x22b/0x360\n  ext4_unlink+0x275/0x390\n  vfs_unlink+0x20b/0x4c0\n  do_unlinkat+0x42f/0x4c0\n  __x64_sys_unlink+0x37/0x50\n  do_syscall_64+0x35/0x80\n\nAfter journal aborting, __jbd2_journal_refile_buffer() is executed with\nholding @jh-\u003eb_state_lock, we can fix it by moving \u0027is_handle_aborted()\u0027\ninto the area protected by @jh-\u003eb_state_lock."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:13:20.780Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0f61c6dc4b714be9d79cf0782ca02ba01c1b7ac3"
        },
        {
          "url": "https://git.kernel.org/stable/c/6073389db83b903678a0920554fa19f5bdc51c48"
        },
        {
          "url": "https://git.kernel.org/stable/c/fa5b65d39332fef7a11ae99cb1f0696012a61527"
        },
        {
          "url": "https://git.kernel.org/stable/c/f7161d0da975adc234161cd0641d0e484f5ce375"
        },
        {
          "url": "https://git.kernel.org/stable/c/e62f79827784f56499a50ea2e893c98317b5407b"
        },
        {
          "url": "https://git.kernel.org/stable/c/731c1662d838fe954c6759e3ee43229b0d928fe4"
        },
        {
          "url": "https://git.kernel.org/stable/c/ddd896792e1718cb84c96f3e618270589b6886dc"
        },
        {
          "url": "https://git.kernel.org/stable/c/4a734f0869f970b8a9b65062ea40b09a5da9dba8"
        }
      ],
      "title": "jbd2: fix assertion \u0027jh-\u003eb_frozen_data == NULL\u0027 failure when journal aborted",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50126",
    "datePublished": "2025-06-18T11:02:53.672Z",
    "dateReserved": "2025-06-18T10:57:27.417Z",
    "dateUpdated": "2026-05-11T19:13:20.780Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-50126",
      "date": "2026-05-23",
      "epss": "0.00043",
      "percentile": "0.13506"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50126\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-06-18T11:15:42.360\",\"lastModified\":\"2025-11-18T18:11:46.243\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\njbd2: fix assertion \u0027jh-\u003eb_frozen_data == NULL\u0027 failure when journal aborted\\n\\nFollowing process will fail assertion \u0027jh-\u003eb_frozen_data == NULL\u0027 in\\njbd2_journal_dirty_metadata():\\n\\n                   jbd2_journal_commit_transaction\\nunlink(dir/a)\\n jh-\u003eb_transaction = trans1\\n jh-\u003eb_jlist = BJ_Metadata\\n                    journal-\u003ej_running_transaction = NULL\\n                    trans1-\u003et_state = T_COMMIT\\nunlink(dir/b)\\n handle-\u003eh_trans = trans2\\n do_get_write_access\\n  jh-\u003eb_modified = 0\\n  jh-\u003eb_frozen_data = frozen_buffer\\n  jh-\u003eb_next_transaction = trans2\\n jbd2_journal_dirty_metadata\\n  is_handle_aborted\\n   is_journal_aborted // return false\\n\\n           --\u003e jbd2 abort \u003c--\\n\\n                     while (commit_transaction-\u003et_buffers)\\n                      if (is_journal_aborted)\\n                       jbd2_journal_refile_buffer\\n                        __jbd2_journal_refile_buffer\\n                         WRITE_ONCE(jh-\u003eb_transaction,\\n\\t\\t\\t\\t\\t\\tjh-\u003eb_next_transaction)\\n                         WRITE_ONCE(jh-\u003eb_next_transaction, NULL)\\n                         __jbd2_journal_file_buffer(jh, BJ_Reserved)\\n        J_ASSERT_JH(jh, jh-\u003eb_frozen_data == NULL) // assertion failure !\\n\\nThe reproducer (See detail in [Link]) reports:\\n ------------[ cut here ]------------\\n kernel BUG at fs/jbd2/transaction.c:1629!\\n invalid opcode: 0000 [#1] PREEMPT SMP\\n CPU: 2 PID: 584 Comm: unlink Tainted: G        W\\n 5.19.0-rc6-00115-g4a57a8400075-dirty #697\\n RIP: 0010:jbd2_journal_dirty_metadata+0x3c5/0x470\\n RSP: 0018:ffffc90000be7ce0 EFLAGS: 00010202\\n Call Trace:\\n  \u003cTASK\u003e\\n  __ext4_handle_dirty_metadata+0xa0/0x290\\n  ext4_handle_dirty_dirblock+0x10c/0x1d0\\n  ext4_delete_entry+0x104/0x200\\n  __ext4_unlink+0x22b/0x360\\n  ext4_unlink+0x275/0x390\\n  vfs_unlink+0x20b/0x4c0\\n  do_unlinkat+0x42f/0x4c0\\n  __x64_sys_unlink+0x37/0x50\\n  do_syscall_64+0x35/0x80\\n\\nAfter journal aborting, __jbd2_journal_refile_buffer() is executed with\\nholding @jh-\u003eb_state_lock, we can fix it by moving \u0027is_handle_aborted()\u0027\\ninto the area protected by @jh-\u003eb_state_lock.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: jbd2: se corrige el error de aserci\u00f3n \u0027jh-\u0026gt;b_frozen_data == NULL\u0027 cuando se aborta el diario El siguiente proceso fallar\u00e1 la aserci\u00f3n \u0027jh-\u0026gt;b_frozen_data == NULL\u0027 en jbd2_journal_dirty_metadata(): jbd2_journal_commit_transaction unlink(dir/a) jh-\u0026gt;b_transaction = trans1 jh-\u0026gt;b_jlist = BJ_Metadata journal-\u0026gt;j_running_transaction = NULL trans1-\u0026gt;t_state = T_COMMIT unlink(dir/b) handle-\u0026gt;h_trans = trans2 do_get_write_access jh-\u0026gt;b_modified = 0 jh-\u0026gt;b_frozen_data = frozen_buffer jh-\u0026gt;b_next_transaction = trans2 jbd2_journal_dirty_metadata is_handle_aborted is_journal_aborted // devuelve falso --\u0026gt; jbd2 abort \u0026lt;-- while (commit_transaction-\u0026gt;t_buffers) if (is_journal_aborted) jbd2_journal_refile_buffer __jbd2_journal_refile_buffer WRITE_ONCE(jh-\u0026gt;b_transaction, jh-\u0026gt;b_next_transaction) WRITE_ONCE(jh-\u0026gt;b_next_transaction, NULL) __jbd2_journal_file_buffer(jh, BJ_Reserved) J_ASSERT_JH(jh, jh-\u0026gt;b_frozen_data == NULL) // \u00a1Fallo de aserci\u00f3n! El reproductor (ver detalles en [Enlace]) informa: ------------[ cortar aqu\u00ed ]------------ \u00a1ERROR del kernel en fs/jbd2/transaction.c:1629! c\u00f3digo de operaci\u00f3n no v\u00e1lido: 0000 [#1] PREEMPT SMP CPU: 2 PID: 584 Comm: desvincular Contaminado: GW 5.19.0-rc6-00115-g4a57a8400075-dirty #697 RIP: 0010:jbd2_journal_dirty_metadata+0x3c5/0x470 RSP: 0018:ffffc90000be7ce0 EFLAGS: 00010202 Rastreo de llamadas:  __ext4_handle_dirty_metadata+0xa0/0x290 ext4_handle_dirty_dirblock+0x10c/0x1d0 ext4_delete_entry+0x104/0x200 __ext4_unlink+0x22b/0x360 ext4_unlink+0x275/0x390 vfs_unlink+0x20b/0x4c0 do_unlinkat+0x42f/0x4c0 __x64_sys_unlink+0x37/0x50 do_syscall_64+0x35/0x80 Despu\u00e9s de abortar el diario, se ejecuta __jbd2_journal_refile_buffer() manteniendo presionado @jh-\u0026gt;b_state_lock. Podemos solucionarlo moviendo \u0027is_handle_aborted()\u0027 al \u00e1rea protegida por @jh-\u0026gt;b_state_lock.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-617\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.6.20\",\"versionEndExcluding\":\"4.14.291\",\"matchCriteriaId\":\"622A407A-754C-4353-8055-EF60B3D7C0D9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.19.256\",\"matchCriteriaId\":\"6C47CDE3-B039-4AE5-B8E4-1DC820E473FF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.211\",\"matchCriteriaId\":\"B1C63D19-C08C-4308-A848-B2523C9275BD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.137\",\"matchCriteriaId\":\"C2BF720F-C5EE-4DE2-9BDF-CE4CFBC767F4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.61\",\"matchCriteriaId\":\"51861563-7F40-460F-82CD-2D3FBDAD6618\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.18.18\",\"matchCriteriaId\":\"5B42E453-8837-49D0-A5EF-03F818A6DC11\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.19\",\"versionEndExcluding\":\"5.19.2\",\"matchCriteriaId\":\"A1A2A5A5-4598-4D7E-BA07-4660398D6C8F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:2.6.19:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"9E2DBD4C-9DD9-4DD3-87CB-A0070A789CEA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:2.6.19:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"8D97ED16-D6B7-4445-889C-4D6DE2EDC49A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:2.6.19:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"B2C2D5D4-9A4B-4CDF-8D71-D22EB5E97D5A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:2.6.19:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"DFFB2843-A867-48EC-97D7-B106C7BBAED0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:2.6.19:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"3CD3FE23-1A10-47E6-AD7E-D67F1BE3C5E2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:2.6.19:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"9F39FC76-7D77-4064-94D3-A16C436FA8D1\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0f61c6dc4b714be9d79cf0782ca02ba01c1b7ac3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4a734f0869f970b8a9b65062ea40b09a5da9dba8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6073389db83b903678a0920554fa19f5bdc51c48\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/731c1662d838fe954c6759e3ee43229b0d928fe4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ddd896792e1718cb84c96f3e618270589b6886dc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e62f79827784f56499a50ea2e893c98317b5407b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f7161d0da975adc234161cd0641d0e484f5ce375\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fa5b65d39332fef7a11ae99cb1f0696012a61527\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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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

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.