CVE-2024-50079

{"id": "CVE-2024-50079", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2024-10-29T01:15:04.927", "references": [{"url": "https://git.kernel.org/stable/c/887ba598d9cfb537bdb3dfd95f087ff8a08cb74d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8f7033aa4089fbaf7a33995f0f2ee6c9d7b9ca1b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/sqpoll: ensure task state is TASK_RUNNING when running task_work\n\nWhen the sqpoll is exiting and cancels pending work items, it may need\nto run task_work. If this happens from within io_uring_cancel_generic(),\nthen it may be under waiting for the io_uring_task waitqueue. This\nresults in the below splat from the scheduler, as the ring mutex may be\nattempted grabbed while in a TASK_INTERRUPTIBLE state.\n\nEnsure that the task state is set appropriately for that, just like what\nis done for the other cases in io_run_task_work().\n\ndo not call blocking ops when !TASK_RUNNING; state=1 set at [<0000000029387fd2>] prepare_to_wait+0x88/0x2fc\nWARNING: CPU: 6 PID: 59939 at kernel/sched/core.c:8561 __might_sleep+0xf4/0x140\nModules linked in:\nCPU: 6 UID: 0 PID: 59939 Comm: iou-sqp-59938 Not tainted 6.12.0-rc3-00113-g8d020023b155 #7456\nHardware name: linux,dummy-virt (DT)\npstate: 61400005 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)\npc : __might_sleep+0xf4/0x140\nlr : __might_sleep+0xf4/0x140\nsp : ffff80008c5e7830\nx29: ffff80008c5e7830 x28: ffff0000d93088c0 x27: ffff60001c2d7230\nx26: dfff800000000000 x25: ffff0000e16b9180 x24: ffff80008c5e7a50\nx23: 1ffff000118bcf4a x22: ffff0000e16b9180 x21: ffff0000e16b9180\nx20: 000000000000011b x19: ffff80008310fac0 x18: 1ffff000118bcd90\nx17: 30303c5b20746120 x16: 74657320313d6574 x15: 0720072007200720\nx14: 0720072007200720 x13: 0720072007200720 x12: ffff600036c64f0b\nx11: 1fffe00036c64f0a x10: ffff600036c64f0a x9 : dfff800000000000\nx8 : 00009fffc939b0f6 x7 : ffff0001b6327853 x6 : 0000000000000001\nx5 : ffff0001b6327850 x4 : ffff600036c64f0b x3 : ffff8000803c35bc\nx2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000e16b9180\nCall trace:\n __might_sleep+0xf4/0x140\n mutex_lock+0x84/0x124\n io_handle_tw_list+0xf4/0x260\n tctx_task_work_run+0x94/0x340\n io_run_task_work+0x1ec/0x3c0\n io_uring_cancel_generic+0x364/0x524\n io_sq_thread+0x820/0x124c\n ret_from_fork+0x10/0x20"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: io_uring/sqpoll: asegurarse de que el estado de la tarea sea TASK_RUNNING al ejecutar task_work Cuando sqpoll sale y cancela elementos de trabajo pendientes, es posible que deba ejecutar task_work. Si esto sucede desde dentro de io_uring_cancel_generic(), es posible que est\u00e9 esperando la cola de espera de io_uring_task. Esto da como resultado el siguiente splat del programador, ya que se puede intentar capturar el mutex de anillo mientras se est\u00e1 en un estado TASK_INTERRUPTIBLE. Aseg\u00farese de que el estado de la tarea est\u00e9 configurado adecuadamente para eso, al igual que lo que se hace para los otros casos en io_run_task_work(). no llame a operaciones de bloqueo cuando !TASK_RUNNING; estado=1 establecido en [&lt;0000000029387fd2&gt;] prepare_to_wait+0x88/0x2fc ADVERTENCIA: CPU: 6 PID: 59939 en kernel/sched/core.c:8561 __might_sleep+0xf4/0x140 M\u00f3dulos vinculados: CPU: 6 UID: 0 PID: 59939 Comm: iou-sqp-59938 No contaminado 6.12.0-rc3-00113-g8d020023b155 #7456 Nombre del hardware: linux,dummy-virt (DT) pstate: 61400005 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--) pc : __might_sleep+0xf4/0x140 lr : __might_sleep+0xf4/0x140 sp : ffff80008c5e7830 x29: ffff80008c5e7830 x28: ffff0000d93088c0 x27: ffff60001c2d7230 x26: dfff800000000000 x25: ffff0000e16b9180 x24: ffff80008c5e7a50 x23: 1ffff000118bcf4a x22: ffff0000e16b9180 x21: ffff0000e16b9180 x20: 000000000000011b x19: ffff80008310fac0 x18: 1ffff000118bcd90 x17: 30303c5b20746120 x16: 74657320313d6574 x15: 0720072007200720 x14: 0720072007200720 x13: 0720072007200720 x12: ffff600036c64f0b x11: 1fffe00036c64f0a x10: ffff600036c64f0a x9: dfff800000000000 x8: 00009fffc939b0f6 x7: ffff0001b6327853 x6 : 0000000000000001 x5 : ffff0001b6327850 x4 : ffff600036c64f0b x3 : ffff8000803c35bc x2 : 000000000000000 x1 : 0000000000000000 x0 : ffff0000e16b9180 Rastreo de llamadas: __might_sleep+0xf4/0x140 mutex_lock+0x84/0x124 io_handle_tw_list+0xf4/0x260 tctx_task_work_run+0x94/0x340 io_run_task_work+0x1ec/0x3c0 io_uring_cancel_generic+0x364/0x524 io_sq_thread+0x820/0x124c ret_from_fork+0x10/0x20"}], "lastModified": "2024-10-30T17:05:40.960", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DF445508-130D-47A0-8D0A-52A2212A1B17", "versionEndExcluding": "6.11.5", "versionStartIncluding": "6.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3C95E234-D335-4B6C-96BF-E2CEBD8654ED"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}