{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-97454",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2026-97454"
  ],
  "published": "2026-09-24T16:08:25Z",
  "summary": "ACPICA: add boundary checks in acpi_ps_get_next_field()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPICA: add boundary checks in acpi_ps_get_next_field()\n\nAdd boundary checks in acpi_ps_get_next_field() to prevent out-of-bounds\naccess.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
    }
  ],
  "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": "6.1.189",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-97454"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1d704a9ba665f8d1598fc6f37a76cbd6547cdcb1"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6ecf2a4855a728c4c46e33919fea9480052d62a7"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6509f56df51235fe447b624e40c098082717625c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7d97ecf2a4c7a77a9daa3fe76790ddecddc9cd0c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/add715fc1ef5b0a71afe22b3f02aa28775d9ba62"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/bc5b2158c7626e3e8a78c5bb93ce0a734a26b84a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e15aa60de0256d63df2331bf5a4bc4dd287504cd"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-10-03T11:04:09Z",
    "severity": {
      "source": "kernel CNA",
      "cvss_v3_score": 7.7,
      "cvss_v3_severity": "High",
      "scenario": "AV:L - The truncated bytes are a Field/BankField/IndexField FieldList inside a local DSDT/SSDT, not a network PDU. acpi_bus_init() calls acpi_load_tables() \u2192 acpi_tb_load_namespace() \u2192 acpi_ns_load_table() \u2192 acpi_ns_execute_table() \u2192 acpi_ps_parse_aml() \u2192 acpi_ps_parse_loop() \u2192 acpi_ps_get_next_arg(ARGP_FIELDLIST) \u2192 acpi_ps_get_next_field().\nAC:L - A NamedField with fewer than ACPI_NAMESEG_SIZE bytes left before aml_end makes ACPI_MOVE_32_TO_32(&name, parser_state->aml) over-read on every load; AccessField/ExtAccessField similarly ACPI_GET8 past the buffer. The table author sets those AML bytes, with no race.\nPR:N - acpi_bus_init() calls acpi_load_tables() at boot with no capable() check, so a DSDT/SSDT whose FieldList is truncated reaches acpi_ps_get_next_field() with no Linux uid or user-namespace privilege.\nUI:N - acpi_ns_execute_table() parses module-level Field/BankField/IndexField opcodes while acpi_load_tables() runs from acpi_bus_init() on ordinary power-on; no victim mount, sysfs open, or module load is required to reach acpi_ps_get_next_field().\nS:U - The over-read is of kernel heap adjacent to the ACPI table buffer parsed by host ACPICA in acpi_ps_get_next_field(); it does not cross a KVM/Xen, IOMMU, or sandbox boundary.\nC:H - Without aml_end checks, acpi_ps_get_next_field() ACPI_MOVE_32_TO_32-reads a NameSeg and ACPI_GET8-reads Access/ExtAccess bytes past the table heap object (ASAN: 4-byte read past a 175-byte allocation). ARGP_FIELDLIST keeps looping while aml < pkg_end from the attacker-chosen Field PkgLength, so the walk is not capped to a few header bytes.\nI:N - ASAN reports a READ of size 4 in AcpiPsGetNextField; ACPI_MOVE_32_TO_32 and ACPI_GET8 only fill local name/access_type variables and the newly allocated field op. The function never stores through parser_state->aml, so there is no out-of-bounds write.\nA:H - The ASAN heap-buffer-overflow is the NamedField ACPI_MOVE_32_TO_32 immediately past the 175-byte table allocation (shadow redzone). A read off that slab object during acpi_load_tables() can oops or panic the kernel at boot."
    }
  }
}