{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-90348",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-90348"
  ],
  "published": "2026-09-17T16:10:40Z",
  "summary": "wifi: ath10k: snoc: use memcpy_fromio() for MSA ramdump",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath10k: snoc: use memcpy_fromio() for MSA ramdump\n\nOn WCN3990/SNOC the MSA region is mapped with devm_memremap(MEMREMAP_WT).\nOn arm64 such a mapping is not Normal-cacheable, so unaligned accesses to\nit are not permitted. ath10k_msa_dump_memory() copies the region with a\nplain memcpy(), whose optimized __pi_memcpy_generic implementation issues\nwide/unaligned loads. This triggers an alignment fault (FSC=0x21) Oops in\nath10k_snoc_fw_crashed_dump() while collecting the devcoredump:\n\n  Unable to handle kernel paging request ... FSC=0x21: alignment fault\n  pc : __pi_memcpy_generic\n  lr : ath10k_snoc_fw_crashed_dump [ath10k_snoc]\n\nThe Oops both leaves the firmware RAM dump buffer zeroed (no dump is\ncaptured) and crashes the kernel, which in turn breaks modem SSR\nrecovery.\n\nUse memcpy_fromio(), which only performs accesses that are valid for such\na device-memory mapping. The generic memcpy_fromio() implementation aligns\nthe source before issuing word-sized reads and stores the destination with\nput_unaligned(), so it is also safe for the coherent DMA allocation used on\nthe non-reserved-memory path. ath11k and ath12k use the same pattern\nwhen copying target memory into crash dumps, so call it unconditionally\nhere too.\nThe MEMREMAP_WT pointer is a plain void *, so an explicit __iomem cast is\nneeded; use __force to keep sparse happy.\n\nTested-on: WCN3990 hw1.0 SNOC WLAN.HL.3.3.7.c5-00107-QCAHLSWMTPL-1",
  "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": "6.1.188",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-90348"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e5bc3658da9c8a535e3fa5c0c875b2a456954e81"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/fed1f662c9f9fd19eeab6c01966b7b5a33804420"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/838cab267ce9a975776e022f25094f8cbe1625d2"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/eb946595a58decdb4cab1b5f3c972ae66f41f1c8"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/152e894e90716163c646d70f86b3afeb70442783"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7039825a7479df637c4f5d546cb0e1cec18cd8e1"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/045d1bfb72d2631ab9ec74afa491aa788ebb57aa"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4f25071afe9218aaae1c63fbf75e229aa6405319"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-09-17T16:10:40Z"
  }
}