{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-24T08:37:36.329","vulnerabilities":[{"cve":{"id":"CVE-2023-52813","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-05-21T16:15:19.477","lastModified":"2025-09-26T16:58:22.250","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: pcrypt - Fix hungtask for PADATA_RESET\n\nWe found a hungtask bug in test_aead_vec_cfg as follows:\n\nINFO: task cryptomgr_test:391009 blocked for more than 120 seconds.\n\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\nCall trace:\n __switch_to+0x98/0xe0\n __schedule+0x6c4/0xf40\n schedule+0xd8/0x1b4\n schedule_timeout+0x474/0x560\n wait_for_common+0x368/0x4e0\n wait_for_completion+0x20/0x30\n wait_for_completion+0x20/0x30\n test_aead_vec_cfg+0xab4/0xd50\n test_aead+0x144/0x1f0\n alg_test_aead+0xd8/0x1e0\n alg_test+0x634/0x890\n cryptomgr_test+0x40/0x70\n kthread+0x1e0/0x220\n ret_from_fork+0x10/0x18\n Kernel panic - not syncing: hung_task: blocked tasks\n\nFor padata_do_parallel, when the return err is 0 or -EBUSY, it will call\nwait_for_completion(&wait->completion) in test_aead_vec_cfg. In normal\ncase, aead_request_complete() will be called in pcrypt_aead_serial and the\nreturn err is 0 for padata_do_parallel. But, when pinst->flags is\nPADATA_RESET, the return err is -EBUSY for padata_do_parallel, and it\nwon't call aead_request_complete(). Therefore, test_aead_vec_cfg will\nhung at wait_for_completion(&wait->completion), which will cause\nhungtask.\n\nThe problem comes as following:\n(padata_do_parallel)                 |\n    rcu_read_lock_bh();              |\n    err = -EINVAL;                   |   (padata_replace)\n                                     |     pinst->flags |= PADATA_RESET;\n    err = -EBUSY                     |\n    if (pinst->flags & PADATA_RESET) |\n        rcu_read_unlock_bh()         |\n        return err\n\nIn order to resolve the problem, we replace the return err -EBUSY with\n-EAGAIN, which means parallel_data is changing, and the caller should call\nit again.\n\nv3:\nremove retry and just change the return err.\nv2:\nintroduce padata_try_do_parallel() in pcrypt_aead_encrypt and\npcrypt_aead_decrypt to solve the hungtask."},{"lang":"es","value":"En el kernel de Linux, se resolvió la siguiente vulnerabilidad: crypto: pcrypt - Reparar hungtask para PADATA_RESET. Encontramos un error de hungtask en test_aead_vec_cfg de la siguiente manera: INFORMACIÓN: tarea cryptomgr_test:391009 bloqueada durante más de 120 segundos. \"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" desactiva este mensaje. Seguimiento de llamadas: __switch_to+0x98/0xe0 __schedule+0x6c4/0xf40 Schedule+0xd8/0x1b4 Schedule_timeout+0x474/0x560 wait_for_common+0x368/0x4e0 wait_for_completion+0x20/0x30 wait_for_completion+0x20/0x30 test_aead_ve c_cfg+0xab4/0xd50 test_aead+0x144/0x1f0 alg_test_aead+ 0xd8/0x1e0 alg_test+0x634/0x890 cryptomgr_test+0x40/0x70 kthread+0x1e0/0x220 ret_from_fork+0x10/0x18 kernel panic - no syncing: hung_task: tareas bloqueadas para el error for_completion (&esperar->finalización) en test_aead_vec_cfg. En caso normal, se llamará aead_request_complete() en pcrypt_aead_serial y el error de retorno es 0 para padata_do_parallel. Pero, cuando pinst->flags es PADATA_RESET, el error de retorno es -EBUSY para padata_do_parallel y no llamará a aead_request_complete(). Por lo tanto, test_aead_vec_cfg se colgará en wait_for_completion(&wait->completion), lo que provocará que se cuelgue la tarea. El problema viene de la siguiente manera: (padata_do_parallel) | rcu_read_lock_bh(); | err = -EINVAL; | (padata_replace) | pinst->flags |= PADATA_RESET; err = -EBUSY | si (pinst->flags & PADATA_RESET) | rcu_read_unlock_bh() | return err Para resolver el problema, reemplazamos el retorno err -EBUSY con -EAGAIN, lo que significa que los datos_paralelos están cambiando y la persona que llama debe llamarlo nuevamente. v3: elimine el reintento y simplemente cambie el error de devolución. v2: introduce padata_try_do_parallel() en pcrypt_aead_encrypt y pcrypt_aead_decrypt para resolver la tarea colgada."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"NVD-CWE-noinfo"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.34","versionEndExcluding":"4.14.331","matchCriteriaId":"0A33B97C-82BF-41CC-9556-0FDC756CA426"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"4.19.300","matchCriteriaId":"C99DDB75-1CAC-40D0-A14D-67A2A55D6005"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.4.262","matchCriteriaId":"28B0AAED-45BA-4928-9A85-66A429B9F038"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.202","matchCriteriaId":"39D508B4-58C7-40C2-BE05-44E41110EB98"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.140","matchCriteriaId":"15D6C23C-78A3-40D2-B76B-4F1D9C2D95C0"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.64","matchCriteriaId":"8D7C884A-CAA2-4EA2-9FEB-5CE776D7B05F"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.5.13","matchCriteriaId":"674C4F82-C336-4B49-BF64-1DE422E889C4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.6.3","matchCriteriaId":"B58252FA-A49C-411F-9B28-DC5FE44BC5A0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/039fec48e062504f14845124a1a25eb199b2ddc0","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/372636debe852913529b1716f44addd94fff2d28","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/546c1796ad1ed0d87dab3c4b5156d75819be2316","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/8f4f68e788c3a7a696546291258bfa5fdb215523","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/c55fc098fd9d2dca475b82d00ffbcaf97879d77e","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/c9c1334697301c10e6918d747ed38abfbc0c96e7","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/e134f3aba98e6c801a693f540912c2d493718ddf","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/e97bf4ada7dddacd184c3e196bd063b0dc71b41d","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/fb2d3a50a8f29a3c66682bb426144f40e32ab818","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/039fec48e062504f14845124a1a25eb199b2ddc0","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/372636debe852913529b1716f44addd94fff2d28","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/546c1796ad1ed0d87dab3c4b5156d75819be2316","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/8f4f68e788c3a7a696546291258bfa5fdb215523","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/c55fc098fd9d2dca475b82d00ffbcaf97879d77e","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/c9c1334697301c10e6918d747ed38abfbc0c96e7","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/e134f3aba98e6c801a693f540912c2d493718ddf","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/e97bf4ada7dddacd184c3e196bd063b0dc71b41d","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/fb2d3a50a8f29a3c66682bb426144f40e32ab818","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]}]}}]}