{
  "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-2025-39763",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-39763",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-09-11T16:52:31.350Z",
    "updatedAt": "2026-05-23T16:00:39.327Z",
    "importedAt": "2026-10-24T01:57:34.152Z",
    "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": "ACPI: APEI: send SIGBUS to current task if synchronous memory error not recovered",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: APEI: send SIGBUS to current task if synchronous memory error not recovered\n\nIf a synchronous error is detected as a result of user-space process\ntriggering a 2-bit uncorrected error, the CPU will take a synchronous\nerror exception such as Synchronous External Abort (SEA) on Arm64. The\nkernel will queue a memory_failure() work which poisons the related\npage, unmaps the page, and then sends a SIGBUS to the process, so that\na system wide panic can be avoided.\n\nHowever, no memory_failure() work will be queued when abnormal\nsynchronous errors occur. These errors can include situations like\ninvalid PA, unexpected severity, no memory failure config support,\ninvalid GUID section, etc. In such a case, the user-space process will\ntrigger SEA again.  This loop can potentially exceed the platform\nfirmware threshold or even trigger a kernel hard lockup, leading to a\nsystem reboot.\n\nFix it by performing a force kill if no memory_failure() work is queued\nfor synchronous errors.\n\n[ rjw: Changelog edits ]",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "8fcc4ae6faf8b455eeef00bc9ae70744e3b0f462",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2fbc85da9ac9386bd89fcc94e0aadaea19d47784"
            },
            {
              "version": "8fcc4ae6faf8b455eeef00bc9ae70744e3b0f462",
              "status": "affected",
              "versionType": "git",
              "lessThan": "082735fbcdb6cd0cf20fbec94516ab2996f1cdd5"
            },
            {
              "version": "8fcc4ae6faf8b455eeef00bc9ae70744e3b0f462",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cfc9bc15bda6fd0c496cbe2c628564d4d7c332c1"
            },
            {
              "version": "8fcc4ae6faf8b455eeef00bc9ae70744e3b0f462",
              "status": "affected",
              "versionType": "git",
              "lessThan": "af089e41811a1ad6a7b2b80e839a73ec4c3cecdd"
            },
            {
              "version": "8fcc4ae6faf8b455eeef00bc9ae70744e3b0f462",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3cb4f18797247985b0f51d5300f8cb6c78f343ea"
            },
            {
              "version": "8fcc4ae6faf8b455eeef00bc9ae70744e3b0f462",
              "status": "affected",
              "versionType": "git",
              "lessThan": "79a5ae3c4c5eb7e38e0ebe4d6bf602d296080060"
            },
            {
              "version": "af02933d59bd1621a48d8b0b331cca9e530ba14b",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.4.69",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.5"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.8",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.8"
            },
            {
              "version": "6.1.164",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.103",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.43",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.15.11",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.15.*"
            },
            {
              "version": "6.16.2",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.16.*"
            },
            {
              "version": "6.17",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}