FKIE_CVE-2023-52813

Vulnerability from fkie_nvd - Published: 2024-05-21 16:15 - Updated: 2026-06-17 06:43
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: crypto: pcrypt - Fix hungtask for PADATA_RESET We found a hungtask bug in test_aead_vec_cfg as follows: INFO: task cryptomgr_test:391009 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Call trace: __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_vec_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 - not syncing: hung_task: blocked tasks For padata_do_parallel, when the return err is 0 or -EBUSY, it will call wait_for_completion(&wait->completion) in test_aead_vec_cfg. In normal case, aead_request_complete() will be called in pcrypt_aead_serial and the return err is 0 for padata_do_parallel. But, when pinst->flags is PADATA_RESET, the return err is -EBUSY for padata_do_parallel, and it won't call aead_request_complete(). Therefore, test_aead_vec_cfg will hung at wait_for_completion(&wait->completion), which will cause hungtask. The problem comes as following: (padata_do_parallel) | rcu_read_lock_bh(); | err = -EINVAL; | (padata_replace) | pinst->flags |= PADATA_RESET; err = -EBUSY | if (pinst->flags & PADATA_RESET) | rcu_read_unlock_bh() | return err In order to resolve the problem, we replace the return err -EBUSY with -EAGAIN, which means parallel_data is changing, and the caller should call it again. v3: remove retry and just change the return err. v2: introduce padata_try_do_parallel() in pcrypt_aead_encrypt and pcrypt_aead_decrypt to solve the hungtask.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/039fec48e062504f14845124a1a25eb199b2ddc0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/372636debe852913529b1716f44addd94fff2d28Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/546c1796ad1ed0d87dab3c4b5156d75819be2316Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8f4f68e788c3a7a696546291258bfa5fdb215523Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c55fc098fd9d2dca475b82d00ffbcaf97879d77ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c9c1334697301c10e6918d747ed38abfbc0c96e7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e134f3aba98e6c801a693f540912c2d493718ddfPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e97bf4ada7dddacd184c3e196bd063b0dc71b41dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fb2d3a50a8f29a3c66682bb426144f40e32ab818Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/039fec48e062504f14845124a1a25eb199b2ddc0Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/372636debe852913529b1716f44addd94fff2d28Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/546c1796ad1ed0d87dab3c4b5156d75819be2316Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8f4f68e788c3a7a696546291258bfa5fdb215523Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c55fc098fd9d2dca475b82d00ffbcaf97879d77ePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c9c1334697301c10e6918d747ed38abfbc0c96e7Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e134f3aba98e6c801a693f540912c2d493718ddfPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e97bf4ada7dddacd184c3e196bd063b0dc71b41dPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/fb2d3a50a8f29a3c66682bb426144f40e32ab818Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

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  "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 \u003e /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(\u0026wait-\u003ecompletion) 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-\u003eflags is\nPADATA_RESET, the return err is -EBUSY for padata_do_parallel, and it\nwon\u0027t call aead_request_complete(). Therefore, test_aead_vec_cfg will\nhung at wait_for_completion(\u0026wait-\u003ecompletion), 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-\u003eflags |= PADATA_RESET;\n    err = -EBUSY                     |\n    if (pinst-\u003eflags \u0026 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 resolvi\u00f3 la siguiente vulnerabilidad: crypto: pcrypt - Reparar hungtask para PADATA_RESET. Encontramos un error de hungtask en test_aead_vec_cfg de la siguiente manera: INFORMACI\u00d3N: tarea cryptomgr_test:391009 bloqueada durante m\u00e1s de 120 segundos. \"echo 0 \u0026gt; /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 (\u0026amp;esperar-\u0026gt;finalizaci\u00f3n) en test_aead_vec_cfg. En caso normal, se llamar\u00e1 aead_request_complete() en pcrypt_aead_serial y el error de retorno es 0 para padata_do_parallel. Pero, cuando pinst-\u0026gt;flags es PADATA_RESET, el error de retorno es -EBUSY para padata_do_parallel y no llamar\u00e1 a aead_request_complete(). Por lo tanto, test_aead_vec_cfg se colgar\u00e1 en wait_for_completion(\u0026amp;wait-\u0026gt;completion), lo que provocar\u00e1 que se cuelgue la tarea. El problema viene de la siguiente manera: (padata_do_parallel) | rcu_read_lock_bh(); | err = -EINVAL; | (padata_replace) | pinst-\u0026gt;flags |= PADATA_RESET; err = -EBUSY | si (pinst-\u0026gt;flags \u0026amp; 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 est\u00e1n cambiando y la persona que llama debe llamarlo nuevamente. v3: elimine el reintento y simplemente cambie el error de devoluci\u00f3n. v2: introduce padata_try_do_parallel() en pcrypt_aead_encrypt y pcrypt_aead_decrypt para resolver la tarea colgada."
    }
  ],
  "id": "CVE-2023-52813",
  "lastModified": "2026-06-17T06:43:38.660",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-52813",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-05-23T17:18:51.048604Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-05-21T16:15:19.477",
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    },
    {
      "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"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.