cve-2024-50006
Vulnerability from cvelistv5
Published
2024-10-21 18:53
Modified
2024-12-19 09:31
Severity ?
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
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3c46d6060d3e38de22196c1fe7706c5a3c696285
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4192adefc9c570698821c5eb9873320eac2fcbf1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/53b1999cfd2c7addf2e581a32865fe8835467b44Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6252cb6bde7fc76cb8dcb49d1def7c326b190820Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9fedf51ab8cf7b69bff08f37fe0989fec7f5d870Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cc749e61c011c255d81b192a822db650c68b313fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d43776b907659affef1de888525847d64b244194Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d58a00e981d3118b91d503da263e640b7cde6729Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ef05572da0c0eb89614ed01cc17d3c882bdbd1ffPatch
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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          "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"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50006",
    "datePublished": "2024-10-21T18:53:59.938Z",
    "dateReserved": "2024-10-21T12:17:06.060Z",
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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). 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. 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{\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"d58a00e981d3118b91d503da263e640b7cde6729\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"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\": \"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-5f407fcff5a0\"}, \"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\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T09:31:08.798Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-50006\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T09:31:08.798Z\", \"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": "5.1"
    }
  }
}


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