{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-39508", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-06-25T14:23:23.753Z", "datePublished": "2024-07-12T12:20:39.607Z", "dateUpdated": "2024-09-11T17:32:47.742Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-07-15T06:51:00.814Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/io-wq: Use set_bit() and test_bit() at worker->flags\n\nUtilize set_bit() and test_bit() on worker->flags within io_uring/io-wq\nto address potential data races.\n\nThe structure io_worker->flags may be accessed through various data\npaths, leading to concurrency issues. When KCSAN is enabled, it reveals\ndata races occurring in io_worker_handle_work and\nio_wq_activate_free_worker functions.\n\n\t BUG: KCSAN: data-race in io_worker_handle_work / io_wq_activate_free_worker\n\t write to 0xffff8885c4246404 of 4 bytes by task 49071 on cpu 28:\n\t io_worker_handle_work (io_uring/io-wq.c:434 io_uring/io-wq.c:569)\n\t io_wq_worker (io_uring/io-wq.c:?)\n<snip>\n\n\t read to 0xffff8885c4246404 of 4 bytes by task 49024 on cpu 5:\n\t io_wq_activate_free_worker (io_uring/io-wq.c:? io_uring/io-wq.c:285)\n\t io_wq_enqueue (io_uring/io-wq.c:947)\n\t io_queue_iowq (io_uring/io_uring.c:524)\n\t io_req_task_submit (io_uring/io_uring.c:1511)\n\t io_handle_tw_list (io_uring/io_uring.c:1198)\n<snip>\n\nLine numbers against commit 18daea77cca6 (\"Merge tag 'for-linus' of\ngit://git.kernel.org/pub/scm/virt/kvm/kvm\").\n\nThese races involve writes and reads to the same memory location by\ndifferent tasks running on different CPUs. To mitigate this, refactor\nthe code to use atomic operations such as set_bit(), test_bit(), and\nclear_bit() instead of basic \"and\" and \"or\" operations. This ensures\nthread-safe manipulation of worker flags.\n\nAlso, move `create_index` to avoid holes in the structure."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["io_uring/io-wq.c"], "versions": [{"version": "1da177e4c3f4", "lessThan": "ab702c3483db", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f4", "lessThan": "1cbb0affb154", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f4", "lessThan": "8a565304927f", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["io_uring/io-wq.c"], "versions": [{"version": "6.6.35", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom"}, {"version": "6.9.6", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "custom"}, {"version": "6.10", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/ab702c3483db9046bab9f40306f1a28b22dbbdc0"}, {"url": "https://git.kernel.org/stable/c/1cbb0affb15470a9621267fe0a8568007553a4bf"}, {"url": "https://git.kernel.org/stable/c/8a565304927fbd28c9f028c492b5c1714002cbab"}], "title": "io_uring/io-wq: Use set_bit() and test_bit() at worker->flags", "x_generator": {"engine": "bippy-c9c4e1df01b2"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T04:26:15.901Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/ab702c3483db9046bab9f40306f1a28b22dbbdc0", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/1cbb0affb15470a9621267fe0a8568007553a4bf", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/8a565304927fbd28c9f028c492b5c1714002cbab", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-39508", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T17:06:48.077960Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:32:47.742Z"}}]}}

{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-39508", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-06-25T14:23:23.753Z", "datePublished": "2024-07-12T12:20:39.607Z", "dateUpdated": "2024-08-02T04:26:15.901Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-07-15T06:51:00.814Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/io-wq: Use set_bit() and test_bit() at worker->flags\n\nUtilize set_bit() and test_bit() on worker->flags within io_uring/io-wq\nto address potential data races.\n\nThe structure io_worker->flags may be accessed through various data\npaths, leading to concurrency issues. When KCSAN is enabled, it reveals\ndata races occurring in io_worker_handle_work and\nio_wq_activate_free_worker functions.\n\n\t BUG: KCSAN: data-race in io_worker_handle_work / io_wq_activate_free_worker\n\t write to 0xffff8885c4246404 of 4 bytes by task 49071 on cpu 28:\n\t io_worker_handle_work (io_uring/io-wq.c:434 io_uring/io-wq.c:569)\n\t io_wq_worker (io_uring/io-wq.c:?)\n<snip>\n\n\t read to 0xffff8885c4246404 of 4 bytes by task 49024 on cpu 5:\n\t io_wq_activate_free_worker (io_uring/io-wq.c:? io_uring/io-wq.c:285)\n\t io_wq_enqueue (io_uring/io-wq.c:947)\n\t io_queue_iowq (io_uring/io_uring.c:524)\n\t io_req_task_submit (io_uring/io_uring.c:1511)\n\t io_handle_tw_list (io_uring/io_uring.c:1198)\n<snip>\n\nLine numbers against commit 18daea77cca6 (\"Merge tag 'for-linus' of\ngit://git.kernel.org/pub/scm/virt/kvm/kvm\").\n\nThese races involve writes and reads to the same memory location by\ndifferent tasks running on different CPUs. To mitigate this, refactor\nthe code to use atomic operations such as set_bit(), test_bit(), and\nclear_bit() instead of basic \"and\" and \"or\" operations. This ensures\nthread-safe manipulation of worker flags.\n\nAlso, move `create_index` to avoid holes in the structure."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["io_uring/io-wq.c"], "versions": [{"version": "1da177e4c3f4", "lessThan": "ab702c3483db", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f4", "lessThan": "1cbb0affb154", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f4", "lessThan": "8a565304927f", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["io_uring/io-wq.c"], "versions": [{"version": "6.6.35", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom"}, {"version": "6.9.6", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "custom"}, {"version": "6.10", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/ab702c3483db9046bab9f40306f1a28b22dbbdc0"}, {"url": "https://git.kernel.org/stable/c/1cbb0affb15470a9621267fe0a8568007553a4bf"}, {"url": "https://git.kernel.org/stable/c/8a565304927fbd28c9f028c492b5c1714002cbab"}], "title": "io_uring/io-wq: Use set_bit() and test_bit() at worker->flags", "x_generator": {"engine": "bippy-c9c4e1df01b2"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-39508", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T17:06:48.077960Z"}}}], "providerMetadata": {"shortName": "CISA-ADP", "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "dateUpdated": "2024-09-11T12:42:12.464Z"}, "title": "CISA ADP Vulnrichment"}]}}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/io-wq: Use set_bit() and test_bit() at worker->flags\n\nUtilize set_bit() and test_bit() on worker->flags within io_uring/io-wq\nto address potential data races.\n\nThe structure io_worker->flags may be accessed through various data\npaths, leading to concurrency issues. When KCSAN is enabled, it reveals\ndata races occurring in io_worker_handle_work and\nio_wq_activate_free_worker functions.\n\n\t BUG: KCSAN: data-race in io_worker_handle_work / io_wq_activate_free_worker\n\t write to 0xffff8885c4246404 of 4 bytes by task 49071 on cpu 28:\n\t io_worker_handle_work (io_uring/io-wq.c:434 io_uring/io-wq.c:569)\n\t io_wq_worker (io_uring/io-wq.c:?)\n<snip>\n\n\t read to 0xffff8885c4246404 of 4 bytes by task 49024 on cpu 5:\n\t io_wq_activate_free_worker (io_uring/io-wq.c:? io_uring/io-wq.c:285)\n\t io_wq_enqueue (io_uring/io-wq.c:947)\n\t io_queue_iowq (io_uring/io_uring.c:524)\n\t io_req_task_submit (io_uring/io_uring.c:1511)\n\t io_handle_tw_list (io_uring/io_uring.c:1198)\n<snip>\n\nLine numbers against commit 18daea77cca6 (\"Merge tag 'for-linus' of\ngit://git.kernel.org/pub/scm/virt/kvm/kvm\").\n\nThese races involve writes and reads to the same memory location by\ndifferent tasks running on different CPUs. To mitigate this, refactor\nthe code to use atomic operations such as set_bit(), test_bit(), and\nclear_bit() instead of basic \"and\" and \"or\" operations. This ensures\nthread-safe manipulation of worker flags.\n\nAlso, move `create_index` to avoid holes in the structure."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: io_uring/io-wq: use set_bit() y test_bit() en trabajador-&gt;flags Utilice set_bit() y test_bit() en trabajador-&gt;flags dentro de io_uring/io-wq para abordar posibles ejecuci\u00f3ns de datos. Se puede acceder a la estructura io_worker-&gt;flags a trav\u00e9s de varias rutas de datos, lo que genera problemas de concurrencia. Cuando KCSAN est\u00e1 habilitado, revela ejecuci\u00f3ns de datos que ocurren en las funciones io_worker_handle_work y io_wq_activate_free_worker. ERROR: KCSAN: ejecuci\u00f3n de datos en io_worker_handle_work/io_wq_activate_free_worker escribe en 0xffff8885c4246404 de 4 bytes por tarea 49071 en la CPU 28: io_worker_handle_work (io_uring/io-wq.c:434 io_uring/io-wq.c:569) (io_durante/io -wq.c:?) leer en 0xffff8885c4246404 de 4 bytes por tarea 49024 en la CPU 5: io_wq_activate_free_worker (io_uring/io-wq.c:? io_uring/io-wq.c:285) io_wq_enqueue (io_uring/io- wq.c:947) io_queue_iowq (io_uring/io_uring.c:524) io_req_task_submit (io_uring/io_uring.c:1511) io_handle_tw_list (io_uring/io_uring.c:1198) N\u00fameros de l\u00ednea contra El commit 18daea77cca6 (\"Etiqueta de combinaci\u00f3n 'para -linus' de git://git.kernel.org/pub/scm/virt/kvm/kvm\"). Estas ejecuciones implican escrituras y lecturas en la misma ubicaci\u00f3n de memoria mediante diferentes tareas que se ejecutan en diferentes CPU. Para mitigar esto, refactorice el c\u00f3digo para usar operaciones at\u00f3micas como set_bit(), test_bit() y clear_bit() en lugar de operaciones b\u00e1sicas \"y\" y \"o\". Esto garantiza una manipulaci\u00f3n segura para subprocesos de los indicadores de los trabajadores. Adem\u00e1s, mueva `create_index` para evitar agujeros en la estructura."}], "id": "CVE-2024-39508", "lastModified": "2024-07-12T16:34:58.687", "metrics": {}, "published": "2024-07-12T13:15:13.130", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1cbb0affb15470a9621267fe0a8568007553a4bf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8a565304927fbd28c9f028c492b5c1714002cbab"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ab702c3483db9046bab9f40306f1a28b22dbbdc0"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: io_uring/io-wq: Use set_bit() and test_bit() at worker->flags", "id": "2297480", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2297480"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "(CWE-367|CWE-364)", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nio_uring/io-wq: Use set_bit() and test_bit() at worker->flags\nUtilize set_bit() and test_bit() on worker->flags within io_uring/io-wq\nto address potential data races.\nThe structure io_worker->flags may be accessed through various data\npaths, leading to concurrency issues. When KCSAN is enabled, it reveals\ndata races occurring in io_worker_handle_work and\nio_wq_activate_free_worker functions.\nBUG: KCSAN: data-race in io_worker_handle_work / io_wq_activate_free_worker\nwrite to 0xffff8885c4246404 of 4 bytes by task 49071 on cpu 28:\nio_worker_handle_work (io_uring/io-wq.c:434 io_uring/io-wq.c:569)\nio_wq_worker (io_uring/io-wq.c:?)\n<snip>\nread to 0xffff8885c4246404 of 4 bytes by task 49024 on cpu 5:\nio_wq_activate_free_worker (io_uring/io-wq.c:? io_uring/io-wq.c:285)\nio_wq_enqueue (io_uring/io-wq.c:947)\nio_queue_iowq (io_uring/io_uring.c:524)\nio_req_task_submit (io_uring/io_uring.c:1511)\nio_handle_tw_list (io_uring/io_uring.c:1198)\n<snip>\nLine numbers against commit 18daea77cca6 (\"Merge tag 'for-linus' of\ngit://git.kernel.org/pub/scm/virt/kvm/kvm\").\nThese races involve writes and reads to the same memory location by\ndifferent tasks running on different CPUs. To mitigate this, refactor\nthe code to use atomic operations such as set_bit(), test_bit(), and\nclear_bit() instead of basic \"and\" and \"or\" operations. This ensures\nthread-safe manipulation of worker flags.\nAlso, move `create_index` to avoid holes in the structure."], "name": "CVE-2024-39508", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-07-12T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-39508\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-39508\nhttps://lore.kernel.org/linux-cve-announce/2024071206-CVE-2024-39508-20c3@gregkh/T"], "threat_severity": "Moderate", "upstream_fix": "kernel 6.6.35, kernel 6.9.6, kernel 6.10-rc1"}