CVE-2025-71194

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-71194", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-01-31T11:36:51.190Z", "datePublished": "2026-02-04T16:04:15.389Z", "dateUpdated": "2026-10-19T18:25:23.853Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:56:28.925Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix deadlock in wait_current_trans() due to ignored transaction type\n\nWhen wait_current_trans() is called during start_transaction(), it\ncurrently waits for a blocked transaction without considering whether\nthe given transaction type actually needs to wait for that particular\ntransaction state. The btrfs_blocked_trans_types[] array already defines\nwhich transaction types should wait for which transaction states, but\nthis check was missing in wait_current_trans().\n\nThis can lead to a deadlock scenario involving two transactions and\npending ordered extents:\n\n 1. Transaction A is in TRANS_STATE_COMMIT_DOING state\n\n 2. A worker processing an ordered extent calls start_transaction()\n with TRANS_JOIN\n\n 3. join_transaction() returns -EBUSY because Transaction A is in\n TRANS_STATE_COMMIT_DOING\n\n 4. Transaction A moves to TRANS_STATE_UNBLOCKED and completes\n\n 5. A new Transaction B is created (TRANS_STATE_RUNNING)\n\n 6. The ordered extent from step 2 is added to Transaction B's\n pending ordered extents\n\n 7. Transaction B immediately starts commit by another task and\n enters TRANS_STATE_COMMIT_START\n\n 8. The worker finally reaches wait_current_trans(), sees Transaction B\n in TRANS_STATE_COMMIT_START (a blocked state), and waits\n unconditionally\n\n 9. However, TRANS_JOIN should NOT wait for TRANS_STATE_COMMIT_START\n according to btrfs_blocked_trans_types[]\n\n 10. Transaction B is waiting for pending ordered extents to complete\n\n 11. Deadlock: Transaction B waits for ordered extent, ordered extent\n waits for Transaction B\n\nThis can be illustrated by the following call stacks:\n CPU0 CPU1\n btrfs_finish_ordered_io()\n start_transaction(TRANS_JOIN)\n join_transaction()\n # -EBUSY (Transaction A is\n # TRANS_STATE_COMMIT_DOING)\n # Transaction A completes\n # Transaction B created\n # ordered extent added to\n # Transaction B's pending list\n btrfs_commit_transaction()\n # Transaction B enters\n # TRANS_STATE_COMMIT_START\n # waiting for pending ordered\n # extents\n wait_current_trans()\n # waits for Transaction B\n # (should not wait!)\n\nTask bstore_kv_sync in btrfs_commit_transaction waiting for ordered\nextents:\n\n __schedule+0x2e7/0x8a0\n schedule+0x64/0xe0\n btrfs_commit_transaction+0xbf7/0xda0 [btrfs]\n btrfs_sync_file+0x342/0x4d0 [btrfs]\n __x64_sys_fdatasync+0x4b/0x80\n do_syscall_64+0x33/0x40\n entry_SYSCALL_64_after_hwframe+0x44/0xa9\n\nTask kworker in wait_current_trans waiting for transaction commit:\n\n Workqueue: btrfs-syno_nocow btrfs_work_helper [btrfs]\n __schedule+0x2e7/0x8a0\n schedule+0x64/0xe0\n wait_current_trans+0xb0/0x110 [btrfs]\n start_transaction+0x346/0x5b0 [btrfs]\n btrfs_finish_ordered_io.isra.0+0x49b/0x9c0 [btrfs]\n btrfs_work_helper+0xe8/0x350 [btrfs]\n process_one_work+0x1d3/0x3c0\n worker_thread+0x4d/0x3e0\n kthread+0x12d/0x150\n ret_from_fork+0x1f/0x30\n\nFix this by passing the transaction type to wait_current_trans() and\nchecking btrfs_blocked_trans_types[cur_trans->state] against the given\ntype before deciding to wait. This ensures that transaction types which\nare allowed to join during certain blocked states will not unnecessarily\nwait and cause deadlocks."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/transaction.c"], "versions": [{"version": "4a9d8bdee368de78ace8b36da4eb2186afea162d", "lessThan": "e563f59395981fcd69d130761290929806e728d6", "status": "affected", "versionType": "git"}, {"version": "4a9d8bdee368de78ace8b36da4eb2186afea162d", "lessThan": "dc84036c173cff6a432d9ab926298850b1d2a659", "status": "affected", "versionType": "git"}, {"version": "4a9d8bdee368de78ace8b36da4eb2186afea162d", "lessThan": "d7b04b40ac8e6d814e35202a0e1568809b818295", "status": "affected", "versionType": "git"}, {"version": "4a9d8bdee368de78ace8b36da4eb2186afea162d", "lessThan": "99da896614d17e8a84aeb2b2d464ac046cc8633d", "status": "affected", "versionType": "git"}, 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"semver"}, {"version": "6.1.162", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.122", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.67", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.7", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.11", "versionEndExcluding": "5.10.249"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.11", "versionEndExcluding": "5.15.199"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.11", "versionEndExcluding": "6.1.162"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.11", "versionEndExcluding": "6.6.122"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.11", "versionEndExcluding": "6.12.67"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.11", "versionEndExcluding": "6.18.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.11", "versionEndExcluding": "6.19"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/e563f59395981fcd69d130761290929806e728d6"}, {"url": "https://git.kernel.org/stable/c/dc84036c173cff6a432d9ab926298850b1d2a659"}, {"url": "https://git.kernel.org/stable/c/d7b04b40ac8e6d814e35202a0e1568809b818295"}, {"url": "https://git.kernel.org/stable/c/99da896614d17e8a84aeb2b2d464ac046cc8633d"}, {"url": "https://git.kernel.org/stable/c/8b0bb145d3bc264360f525c9717653be3522e528"}, {"url": "https://git.kernel.org/stable/c/9ac63333d600732a56b35ee1fa46836da671eb50"}, {"url": "https://git.kernel.org/stable/c/5037b342825df7094a4906d1e2a9674baab50cb2"}], "title": "btrfs: fix deadlock in wait_current_trans() due to ignored transaction type", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-71194", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-16T16:18:56.240141Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-362", "description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-19T18:25:23.853Z"}}]}}

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The btrfs_blocked_trans_types[] array already defines\nwhich transaction types should wait for which transaction states, but\nthis check was missing in wait_current_trans().\n\nThis can lead to a deadlock scenario involving two transactions and\npending ordered extents:\n\n 1. Transaction A is in TRANS_STATE_COMMIT_DOING state\n\n 2. A worker processing an ordered extent calls start_transaction()\n with TRANS_JOIN\n\n 3. join_transaction() returns -EBUSY because Transaction A is in\n TRANS_STATE_COMMIT_DOING\n\n 4. Transaction A moves to TRANS_STATE_UNBLOCKED and completes\n\n 5. A new Transaction B is created (TRANS_STATE_RUNNING)\n\n 6. The ordered extent from step 2 is added to Transaction B's\n pending ordered extents\n\n 7. Transaction B immediately starts commit by another task and\n enters TRANS_STATE_COMMIT_START\n\n 8. The worker finally reaches wait_current_trans(), sees Transaction B\n in TRANS_STATE_COMMIT_START (a blocked state), and waits\n unconditionally\n\n 9. However, TRANS_JOIN should NOT wait for TRANS_STATE_COMMIT_START\n according to btrfs_blocked_trans_types[]\n\n 10. Transaction B is waiting for pending ordered extents to complete\n\n 11. Deadlock: Transaction B waits for ordered extent, ordered extent\n waits for Transaction B\n\nThis can be illustrated by the following call stacks:\n CPU0 CPU1\n btrfs_finish_ordered_io()\n start_transaction(TRANS_JOIN)\n join_transaction()\n # -EBUSY (Transaction A is\n # TRANS_STATE_COMMIT_DOING)\n # Transaction A completes\n # Transaction B created\n # ordered extent added to\n # Transaction B's pending list\n btrfs_commit_transaction()\n # Transaction B enters\n # TRANS_STATE_COMMIT_START\n # waiting for pending ordered\n # extents\n wait_current_trans()\n # waits for Transaction B\n # (should not wait!)\n\nTask bstore_kv_sync in btrfs_commit_transaction waiting for ordered\nextents:\n\n __schedule+0x2e7/0x8a0\n schedule+0x64/0xe0\n btrfs_commit_transaction+0xbf7/0xda0 [btrfs]\n btrfs_sync_file+0x342/0x4d0 [btrfs]\n __x64_sys_fdatasync+0x4b/0x80\n do_syscall_64+0x33/0x40\n entry_SYSCALL_64_after_hwframe+0x44/0xa9\n\nTask kworker in wait_current_trans waiting for transaction commit:\n\n Workqueue: btrfs-syno_nocow btrfs_work_helper [btrfs]\n __schedule+0x2e7/0x8a0\n schedule+0x64/0xe0\n wait_current_trans+0xb0/0x110 [btrfs]\n start_transaction+0x346/0x5b0 [btrfs]\n btrfs_finish_ordered_io.isra.0+0x49b/0x9c0 [btrfs]\n btrfs_work_helper+0xe8/0x350 [btrfs]\n process_one_work+0x1d3/0x3c0\n worker_thread+0x4d/0x3e0\n kthread+0x12d/0x150\n ret_from_fork+0x1f/0x30\n\nFix this by passing the transaction type to wait_current_trans() and\nchecking btrfs_blocked_trans_types[cur_trans->state] against the given\ntype before deciding to wait. This ensures that transaction types which\nare allowed to join during certain blocked states will not unnecessarily\nwait and cause deadlocks."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.249", "versionStartIncluding": "3.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.199", "versionStartIncluding": "3.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.162", "versionStartIncluding": "3.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.122", "versionStartIncluding": "3.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.67", "versionStartIncluding": "3.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.7", "versionStartIncluding": "3.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.19", "versionStartIncluding": "3.11"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:56:28.925Z"}}}, "cveMetadata": {"cveId": "CVE-2025-71194", "state": "PUBLISHED", "dateUpdated": "2026-10-19T18:25:23.853Z", "dateReserved": "2026-01-31T11:36:51.190Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-02-04T16:04:15.389Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/btrfs/transaction.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "e563f59395981fcd69d130761290929806e728d6", "status": "affected", "version": "4a9d8bdee368de78ace8b36da4eb2186afea162d", "versionType": "git"}, {"lessThan": "dc84036c173cff6a432d9ab926298850b1d2a659", "status": "affected", "version": "4a9d8bdee368de78ace8b36da4eb2186afea162d", "versionType": "git"}, {"lessThan": "d7b04b40ac8e6d814e35202a0e1568809b818295", "status": "affected", "version": "4a9d8bdee368de78ace8b36da4eb2186afea162d", "versionType": "git"}, {"lessThan": "99da896614d17e8a84aeb2b2d464ac046cc8633d", "status": "affected", "version": "4a9d8bdee368de78ace8b36da4eb2186afea162d", "versionType": "git"}, {"lessThan": "8b0bb145d3bc264360f525c9717653be3522e528", "status": "affected", "version": "4a9d8bdee368de78ace8b36da4eb2186afea162d", "versionType": "git"}, {"lessThan": "9ac63333d600732a56b35ee1fa46836da671eb50", "status": "affected", "version": "4a9d8bdee368de78ace8b36da4eb2186afea162d", "versionType": "git"}, {"lessThan": "5037b342825df7094a4906d1e2a9674baab50cb2", "status": "affected", "version": "4a9d8bdee368de78ace8b36da4eb2186afea162d", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/btrfs/transaction.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "3.11"}, {"lessThan": "3.11", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.249", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.199", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.162", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.122", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.67", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.7", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.19", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix deadlock in wait_current_trans() due to ignored transaction type\n\nWhen wait_current_trans() is called during start_transaction(), it\ncurrently waits for a blocked transaction without considering whether\nthe given transaction type actually needs to wait for that particular\ntransaction state. The btrfs_blocked_trans_types[] array already defines\nwhich transaction types should wait for which transaction states, but\nthis check was missing in wait_current_trans().\n\nThis can lead to a deadlock scenario involving two transactions and\npending ordered extents:\n\n 1. Transaction A is in TRANS_STATE_COMMIT_DOING state\n\n 2. A worker processing an ordered extent calls start_transaction()\n with TRANS_JOIN\n\n 3. join_transaction() returns -EBUSY because Transaction A is in\n TRANS_STATE_COMMIT_DOING\n\n 4. Transaction A moves to TRANS_STATE_UNBLOCKED and completes\n\n 5. A new Transaction B is created (TRANS_STATE_RUNNING)\n\n 6. The ordered extent from step 2 is added to Transaction B's\n pending ordered extents\n\n 7. Transaction B immediately starts commit by another task and\n enters TRANS_STATE_COMMIT_START\n\n 8. The worker finally reaches wait_current_trans(), sees Transaction B\n in TRANS_STATE_COMMIT_START (a blocked state), and waits\n unconditionally\n\n 9. However, TRANS_JOIN should NOT wait for TRANS_STATE_COMMIT_START\n according to btrfs_blocked_trans_types[]\n\n 10. Transaction B is waiting for pending ordered extents to complete\n\n 11. Deadlock: Transaction B waits for ordered extent, ordered extent\n waits for Transaction B\n\nThis can be illustrated by the following call stacks:\n CPU0 CPU1\n btrfs_finish_ordered_io()\n start_transaction(TRANS_JOIN)\n join_transaction()\n # -EBUSY (Transaction A is\n # TRANS_STATE_COMMIT_DOING)\n # Transaction A completes\n # Transaction B created\n # ordered extent added to\n # Transaction B's pending list\n btrfs_commit_transaction()\n # Transaction B enters\n # TRANS_STATE_COMMIT_START\n # waiting for pending ordered\n # extents\n wait_current_trans()\n # waits for Transaction B\n # (should not wait!)\n\nTask bstore_kv_sync in btrfs_commit_transaction waiting for ordered\nextents:\n\n __schedule+0x2e7/0x8a0\n schedule+0x64/0xe0\n btrfs_commit_transaction+0xbf7/0xda0 [btrfs]\n btrfs_sync_file+0x342/0x4d0 [btrfs]\n __x64_sys_fdatasync+0x4b/0x80\n do_syscall_64+0x33/0x40\n entry_SYSCALL_64_after_hwframe+0x44/0xa9\n\nTask kworker in wait_current_trans waiting for transaction commit:\n\n Workqueue: btrfs-syno_nocow btrfs_work_helper [btrfs]\n __schedule+0x2e7/0x8a0\n schedule+0x64/0xe0\n wait_current_trans+0xb0/0x110 [btrfs]\n start_transaction+0x346/0x5b0 [btrfs]\n btrfs_finish_ordered_io.isra.0+0x49b/0x9c0 [btrfs]\n btrfs_work_helper+0xe8/0x350 [btrfs]\n process_one_work+0x1d3/0x3c0\n worker_thread+0x4d/0x3e0\n kthread+0x12d/0x150\n ret_from_fork+0x1f/0x30\n\nFix this by passing the transaction type to wait_current_trans() and\nchecking btrfs_blocked_trans_types[cur_trans->state] against the given\ntype before deciding to wait. This ensures that transaction types which\nare allowed to join during certain blocked states will not unnecessarily\nwait and cause deadlocks."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nbtrfs: corrige interbloqueo en wait_current_trans() debido a un tipo de transacci\u00f3n ignorado\n\nCuando se llama a wait_current_trans() durante start_transaction(), actualmente espera por una transacci\u00f3n bloqueada sin considerar si el tipo de transacci\u00f3n dado realmente necesita esperar por ese estado de transacci\u00f3n particular. El array btrfs_blocked_trans_types[] ya define qu\u00e9 tipos de transacci\u00f3n deben esperar por qu\u00e9 estados de transacci\u00f3n, pero esta verificaci\u00f3n faltaba en wait_current_trans().\n\nEsto puede llevar a un escenario de interbloqueo que involucra dos transacciones y extensiones ordenadas pendientes:\n\n 1. La Transacci\u00f3n A est\u00e1 en estado TRANS_STATE_COMMIT_DOING\n 2. Un worker que procesa una extensi\u00f3n ordenada llama a start_transaction() con TRANS_JOIN\n 3. join_transaction() devuelve -EBUSY porque la Transacci\u00f3n A est\u00e1 en TRANS_STATE_COMMIT_DOING\n 4. La Transacci\u00f3n A pasa a TRANS_STATE_UNBLOCKED y se completa\n 5. Se crea una nueva Transacci\u00f3n B (TRANS_STATE_RUNNING)\n 6. La extensi\u00f3n ordenada del paso 2 se a\u00f1ade a las extensiones ordenadas pendientes de la Transacci\u00f3n B\n 7. La Transacci\u00f3n B inicia inmediatamente la confirmaci\u00f3n por otra tarea y entra en TRANS_STATE_COMMIT_START\n 8. El worker finalmente llega a wait_current_trans(), ve la Transacci\u00f3n B en TRANS_STATE_COMMIT_START (un estado bloqueado), y espera incondicionalmente\n 9. Sin embargo, TRANS_JOIN NO deber\u00eda esperar por TRANS_STATE_COMMIT_START seg\u00fan btrfs_blocked_trans_types[]\n 10. La Transacci\u00f3n B est\u00e1 esperando que las extensiones ordenadas pendientes se completen\n 11. Interbloqueo: La Transacci\u00f3n B espera por la extensi\u00f3n ordenada, la extensi\u00f3n ordenada espera por la Transacci\u00f3n B\n\nEsto puede ilustrarse con las siguientes pilas de llamadas:\n CPU0 CPU1\n btrfs_finish_ordered_io()\n start_transaction(TRANS_JOIN)\n join_transaction()\n # -EBUSY (La Transacci\u00f3n A est\u00e1 en\n # TRANS_STATE_COMMIT_DOING)\n # La Transacci\u00f3n A se completa\n # La Transacci\u00f3n B creada\n # extensi\u00f3n ordenada a\u00f1adida a\n # la lista pendiente de la Transacci\u00f3n B\n btrfs_commit_transaction()\n # La Transacci\u00f3n B entra en\n # TRANS_STATE_COMMIT_START\n # esperando por extensiones ordenadas\n # pendientes\n wait_current_trans()\n # espera por la Transacci\u00f3n B\n # (\u00a1no deber\u00eda esperar!)\n\nTarea bstore_kv_sync en btrfs_commit_transaction esperando por extensiones ordenadas:\n\n __schedule+0x2e7/0x8a0\n schedule+0x64/0xe0\n btrfs_commit_transaction+0xbf7/0xda0 [btrfs]\n btrfs_sync_file+0x342/0x4d0 [btrfs]\n __x64_sys_fdatasync+0x4b/0x80\n do_syscall_64+0x33/0x40\n entry_SYSCALL_64_after_hwframe+0x44/0xa9\n\nTarea kworker en wait_current_trans esperando por la confirmaci\u00f3n de la transacci\u00f3n:\n\n Cola de trabajo: btrfs-syno_nocow btrfs_work_helper [btrfs]\n __schedule+0x2e7/0x8a0\n schedule+0x64/0xe0\n wait_current_trans+0xb0/0x110 [btrfs]\n start_transaction+0x346/0x5b0 [btrfs]\n btrfs_finish_ordered_io.isra.0+0x49b/0x9c0 [btrfs]\n btrfs_work_helper+0xe8/0x350 [btrfs]\n process_one_work+0x1d3/0x3c0\n worker_thread+0x4d/0x3e0\n kthread+0x12d/0x150\n ret_from_fork+0x1f/0x30\n\nSolucione esto pasando el tipo de transacci\u00f3n a wait_current_trans() y verificando btrfs_blocked_trans_types[cur_trans->state] contra el tipo dado antes de decidir esperar. Esto asegura que los tipos de transacci\u00f3n a los que se les permite unirse durante ciertos estados bloqueados no esperar\u00e1n innecesariamente y causar\u00e1n interbloqueos."}], "id": "CVE-2025-71194", "lastModified": "2026-10-19T19:17:16.640", "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-71194", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-16T16:18:56.240141Z", "version": "2.0.3"}}]}, "published": "2026-02-04T17:16:11.297", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5037b342825df7094a4906d1e2a9674baab50cb2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8b0bb145d3bc264360f525c9717653be3522e528"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/99da896614d17e8a84aeb2b2d464ac046cc8633d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9ac63333d600732a56b35ee1fa46836da671eb50"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d7b04b40ac8e6d814e35202a0e1568809b818295"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/dc84036c173cff6a432d9ab926298850b1d2a659"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e563f59395981fcd69d130761290929806e728d6"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: btrfs: fix deadlock in wait_current_trans() due to ignored transaction type", "id": "2436807", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2436807"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-71194", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-02-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-71194\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-71194\nhttps://lore.kernel.org/linux-cve-announce/2026020448-CVE-2025-71194-1108@gregkh/T"], "threat_severity": "Low"}

{}