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CVE-2024-50006 (GCVE-0-2024-50006)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:53 – Updated: 2026-05-12 11:59
VLAI
Title
ext4: fix i_data_sem unlock order in ext4_ind_migrate()
Summary
In the Linux kernel, the following vulnerability has been resolved: ext4: fix i_data_sem unlock order in ext4_ind_migrate() Fuzzing reports a possible deadlock in jbd2_log_wait_commit. This issue is triggered when an EXT4_IOC_MIGRATE ioctl is set to require synchronous updates because the file descriptor is opened with O_SYNC. This can lead to the jbd2_journal_stop() function calling jbd2_might_wait_for_commit(), potentially causing a deadlock if the EXT4_IOC_MIGRATE call races with a write(2) system call. This problem only arises when CONFIG_PROVE_LOCKING is enabled. In this case, the jbd2_might_wait_for_commit macro locks jbd2_handle in the jbd2_journal_stop function while i_data_sem is locked. This triggers lockdep because the jbd2_journal_start function might also lock the same jbd2_handle simultaneously. Found by Linux Verification Center (linuxtesting.org) with syzkaller. Rule: add
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-22 13:29 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e8238f9a8339b3578c85e4192a7a23bc2bdc0333 , < 4192adefc9c570698821c5eb9873320eac2fcbf1 (git)
Affected: e8238f9a8339b3578c85e4192a7a23bc2bdc0333 , < 3c46d6060d3e38de22196c1fe7706c5a3c696285 (git)
Affected: e8238f9a8339b3578c85e4192a7a23bc2bdc0333 , < 53b1999cfd2c7addf2e581a32865fe8835467b44 (git)
Affected: e8238f9a8339b3578c85e4192a7a23bc2bdc0333 , < ef05572da0c0eb89614ed01cc17d3c882bdbd1ff (git)
Affected: e8238f9a8339b3578c85e4192a7a23bc2bdc0333 , < 9fedf51ab8cf7b69bff08f37fe0989fec7f5d870 (git)
Affected: e8238f9a8339b3578c85e4192a7a23bc2bdc0333 , < d43776b907659affef1de888525847d64b244194 (git)
Affected: e8238f9a8339b3578c85e4192a7a23bc2bdc0333 , < 6252cb6bde7fc76cb8dcb49d1def7c326b190820 (git)
Affected: e8238f9a8339b3578c85e4192a7a23bc2bdc0333 , < d58a00e981d3118b91d503da263e640b7cde6729 (git)
Affected: e8238f9a8339b3578c85e4192a7a23bc2bdc0333 , < cc749e61c011c255d81b192a822db650c68b313f (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.10
Unaffected: 0 , < 3.10 (semver)
Unaffected: 4.19.323 , ≤ 4.19.* (semver)
Unaffected: 5.4.285 , ≤ 5.4.* (semver)
Unaffected: 5.10.227 , ≤ 5.10.* (semver)
Unaffected: 5.15.168 , ≤ 5.15.* (semver)
Unaffected: 6.1.113 , ≤ 6.1.* (semver)
Unaffected: 6.6.55 , ≤ 6.6.* (semver)
Unaffected: 6.10.14 , ≤ 6.10.* (semver)
Unaffected: 6.11.3 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens RUGGEDCOM RST2428P Affected: 0 , < V3.2 (custom)
guessed Create a notification for this product.
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Affected: 0 , < V3.2 (custom)
guessed Create a notification for this product.
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family Affected: 0 , < V3.2 (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
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Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
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      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\next4: fix i_data_sem unlock order in ext4_ind_migrate()\\n\\nFuzzing reports a possible deadlock in jbd2_log_wait_commit.\\n\\nThis issue is triggered when an EXT4_IOC_MIGRATE ioctl is set to require\\nsynchronous updates because the file descriptor is opened with O_SYNC.\\nThis can lead to the jbd2_journal_stop() function calling\\njbd2_might_wait_for_commit(), potentially causing a deadlock if the\\nEXT4_IOC_MIGRATE call races with a write(2) system call.\\n\\nThis problem only arises when CONFIG_PROVE_LOCKING is enabled. In this\\ncase, the jbd2_might_wait_for_commit macro locks jbd2_handle in the\\njbd2_journal_stop function while i_data_sem is locked. This triggers\\nlockdep because the jbd2_journal_start function might also lock the same\\njbd2_handle simultaneously.\\n\\nFound by Linux Verification Center (linuxtesting.org) with syzkaller.\\n\\nRule: add\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ext4: se corrige el orden de desbloqueo de i_data_sem en ext4_ind_migrate() Fuzzing informa un posible bloqueo en jbd2_log_wait_commit. Este problema se activa cuando se configura un ioctl EXT4_IOC_MIGRATE para requerir actualizaciones sincr\\u00f3nicas porque el descriptor de archivo se abre con O_SYNC. Esto puede provocar que la funci\\u00f3n jbd2_journal_stop() llame a jbd2_might_wait_for_commit(), lo que puede provocar un bloqueo si la llamada a EXT4_IOC_MIGRATE compite con una llamada del sistema write(2). Este problema solo surge cuando CONFIG_PROVE_LOCKING est\\u00e1 habilitado. En este caso, la macro jbd2_might_wait_for_commit bloquea jbd2_handle en la funci\\u00f3n jbd2_journal_stop mientras i_data_sem est\\u00e1 bloqueado. Esto activa lockdep porque la funci\\u00f3n jbd2_journal_start tambi\\u00e9n podr\\u00eda bloquear el mismo jbd2_handle simult\\u00e1neamente. Encontrado por Linux Verification Center (linuxtesting.org) con syzkaller. Regla: add\"}]",
      "id": "CVE-2024-50006",
      "lastModified": "2024-11-08T16:15:40.370",
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      "published": "2024-10-21T19:15:04.223",
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    "microsoft_vex": {
      "current_release_date": "2026-02-21T02:18:16.000Z",
      "cve": "CVE-2024-50006",
      "id": "msrc_CVE-2024-50006",
      "initial_release_date": "2024-10-01T07:00:00.000Z",
      "product_status:fixed": "5",
      "product_status:known_affected": "5",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "ext4: fix i_data_sem unlock order in ext4_ind_migrate()",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-50006.json",
      "version": "3"
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In this\\ncase, the jbd2_might_wait_for_commit macro locks jbd2_handle in the\\njbd2_journal_stop function while i_data_sem is locked. This triggers\\nlockdep because the jbd2_journal_start function might also lock the same\\njbd2_handle simultaneously.\\n\\nFound by Linux Verification Center (linuxtesting.org) with syzkaller.\\n\\nRule: add\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ext4: se corrige el orden de desbloqueo de i_data_sem en ext4_ind_migrate() Fuzzing informa un posible bloqueo en jbd2_log_wait_commit. Este problema se activa cuando se configura un ioctl EXT4_IOC_MIGRATE para requerir actualizaciones sincr\u00f3nicas porque el descriptor de archivo se abre con O_SYNC. Esto puede provocar que la funci\u00f3n jbd2_journal_stop() llame a jbd2_might_wait_for_commit(), lo que puede provocar un bloqueo si la llamada a EXT4_IOC_MIGRATE compite con una llamada del sistema write(2). 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    "redhat_vex": {
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ext4: fix i_data_sem unlock order in ext4_ind_migrate()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-50006.json",
      "version": "3"
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      "product_status:known_affected": "665",
      "product_status:known_not_affected": "38",
      "product_status:recommended": "718",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-50006",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-50006.json",
      "version": "77"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T22:24:21.923Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-50006\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-22T13:29:18.943550Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-22T13:29:21.942Z\"}}], \"cna\": {\"title\": \"ext4: fix i_data_sem unlock order in ext4_ind_migrate()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"e8238f9a8339b3578c85e4192a7a23bc2bdc0333\", \"lessThan\": \"4192adefc9c570698821c5eb9873320eac2fcbf1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e8238f9a8339b3578c85e4192a7a23bc2bdc0333\", \"lessThan\": \"3c46d6060d3e38de22196c1fe7706c5a3c696285\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e8238f9a8339b3578c85e4192a7a23bc2bdc0333\", \"lessThan\": \"53b1999cfd2c7addf2e581a32865fe8835467b44\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e8238f9a8339b3578c85e4192a7a23bc2bdc0333\", \"lessThan\": \"ef05572da0c0eb89614ed01cc17d3c882bdbd1ff\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e8238f9a8339b3578c85e4192a7a23bc2bdc0333\", \"lessThan\": \"9fedf51ab8cf7b69bff08f37fe0989fec7f5d870\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e8238f9a8339b3578c85e4192a7a23bc2bdc0333\", \"lessThan\": \"d43776b907659affef1de888525847d64b244194\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e8238f9a8339b3578c85e4192a7a23bc2bdc0333\", \"lessThan\": \"6252cb6bde7fc76cb8dcb49d1def7c326b190820\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e8238f9a8339b3578c85e4192a7a23bc2bdc0333\", \"lessThan\": \"d58a00e981d3118b91d503da263e640b7cde6729\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e8238f9a8339b3578c85e4192a7a23bc2bdc0333\", \"lessThan\": \"cc749e61c011c255d81b192a822db650c68b313f\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/ext4/migrate.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.10\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.10\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.323\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.285\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.227\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.168\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.113\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.55\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10.14\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/ext4/migrate.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/4192adefc9c570698821c5eb9873320eac2fcbf1\"}, {\"url\": \"https://git.kernel.org/stable/c/3c46d6060d3e38de22196c1fe7706c5a3c696285\"}, {\"url\": \"https://git.kernel.org/stable/c/53b1999cfd2c7addf2e581a32865fe8835467b44\"}, {\"url\": \"https://git.kernel.org/stable/c/ef05572da0c0eb89614ed01cc17d3c882bdbd1ff\"}, {\"url\": \"https://git.kernel.org/stable/c/9fedf51ab8cf7b69bff08f37fe0989fec7f5d870\"}, {\"url\": \"https://git.kernel.org/stable/c/d43776b907659affef1de888525847d64b244194\"}, {\"url\": \"https://git.kernel.org/stable/c/6252cb6bde7fc76cb8dcb49d1def7c326b190820\"}, {\"url\": \"https://git.kernel.org/stable/c/d58a00e981d3118b91d503da263e640b7cde6729\"}, {\"url\": \"https://git.kernel.org/stable/c/cc749e61c011c255d81b192a822db650c68b313f\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\next4: fix i_data_sem unlock order in ext4_ind_migrate()\\n\\nFuzzing reports a possible deadlock in jbd2_log_wait_commit.\\n\\nThis issue is triggered when an EXT4_IOC_MIGRATE ioctl is set to require\\nsynchronous updates because the file descriptor is opened with O_SYNC.\\nThis can lead to the jbd2_journal_stop() function calling\\njbd2_might_wait_for_commit(), potentially causing a deadlock if the\\nEXT4_IOC_MIGRATE call races with a write(2) system call.\\n\\nThis problem only arises when CONFIG_PROVE_LOCKING is enabled. In this\\ncase, the jbd2_might_wait_for_commit macro locks jbd2_handle in the\\njbd2_journal_stop function while i_data_sem is locked. This triggers\\nlockdep because the jbd2_journal_start function might also lock the same\\njbd2_handle simultaneously.\\n\\nFound by Linux Verification Center (linuxtesting.org) with syzkaller.\\n\\nRule: add\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.323\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.285\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.227\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.168\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.113\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.55\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.14\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.3\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"3.10\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-01-05T10:54:38.417Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-50006\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-05T10:54:38.417Z\", \"dateReserved\": \"2024-10-21T12:17:06.060Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T18:53:59.938Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.


Related by attack behaviour

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.