{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-39763",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-39763"
  ],
  "published": "2025-09-11T16:52:56Z",
  "summary": "ACPI: APEI: send SIGBUS to current task if synchronous memory error not recovered",
  "details": "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": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.164",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-39763"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2fbc85da9ac9386bd89fcc94e0aadaea19d47784"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/082735fbcdb6cd0cf20fbec94516ab2996f1cdd5"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/cfc9bc15bda6fd0c496cbe2c628564d4d7c332c1"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/af089e41811a1ad6a7b2b80e839a73ec4c3cecdd"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3cb4f18797247985b0f51d5300f8cb6c78f343ea"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/79a5ae3c4c5eb7e38e0ebe4d6bf602d296080060"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-24T06:48:58Z"
  }
}