{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2023-52813",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-52813",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2024-05-21T15:31:21.604Z",
    "updatedAt": "2026-05-11T19:33:36.420Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "crypto: pcrypt - Fix hungtask for PADATA_RESET",
      "summary": "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.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "16295bec6398a3eedc9377e1af6ff4c71b98c300",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fb2d3a50a8f29a3c66682bb426144f40e32ab818"
            },
            {
              "version": "16295bec6398a3eedc9377e1af6ff4c71b98c300",
              "status": "affected",
              "versionType": "git",
              "lessThan": "039fec48e062504f14845124a1a25eb199b2ddc0"
            },
            {
              "version": "16295bec6398a3eedc9377e1af6ff4c71b98c300",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c9c1334697301c10e6918d747ed38abfbc0c96e7"
            },
            {
              "version": "16295bec6398a3eedc9377e1af6ff4c71b98c300",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e97bf4ada7dddacd184c3e196bd063b0dc71b41d"
            },
            {
              "version": "16295bec6398a3eedc9377e1af6ff4c71b98c300",
              "status": "affected",
              "versionType": "git",
              "lessThan": "546c1796ad1ed0d87dab3c4b5156d75819be2316"
            },
            {
              "version": "16295bec6398a3eedc9377e1af6ff4c71b98c300",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c55fc098fd9d2dca475b82d00ffbcaf97879d77e"
            },
            {
              "version": "16295bec6398a3eedc9377e1af6ff4c71b98c300",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e134f3aba98e6c801a693f540912c2d493718ddf"
            },
            {
              "version": "16295bec6398a3eedc9377e1af6ff4c71b98c300",
              "status": "affected",
              "versionType": "git",
              "lessThan": "372636debe852913529b1716f44addd94fff2d28"
            },
            {
              "version": "16295bec6398a3eedc9377e1af6ff4c71b98c300",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8f4f68e788c3a7a696546291258bfa5fdb215523"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.34",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.34"
            },
            {
              "version": "4.14.331",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "version": "4.19.300",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.262",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.202",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.140",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.64",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.5.13",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.5.*"
            },
            {
              "version": "6.6.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.7",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}