{
  "cveId": "CVE-2021-47047",
  "url": "https://patchblox.com/security/cve/CVE-2021-47047",
  "summary": "CVE-2021-47047 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47047, released February 28, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  spi: spi-zynqmp-gqspi: return -ENOMEM if dma_map...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  spi: spi-zynqmp-gqspi: return -ENOMEM if dma_map_single fails  The spi controller supports 44-bit address space on AXI in DMA mode, so set dma_addr_t width to 44-bit to avoid using a swiotlb mapping. In addition, if dma_map_single fails, it should return immediately instead of continuing doing the DMA operation which bases on invalid address.  This fixes the following crash which occurs in reading a big block from flash:  [  123.633577] zynqmp-qspi ff0f0000.spi: swiotlb buffer is full (sz: 4194304 bytes), total 32768 (slots), used 0 (slots) [  123.644230] zynqmp-qspi ff0f0000.spi: ERR:rxdma:memory not mapped [  123.784625] Unable to handle kernel paging request at virtual address 00000000003fffc0 [  123.792536] Mem abort info: [  123.795313]   ESR = 0x96000145 [  123.798351]   EC = 0x25: DABT (current EL), IL = 32 bits [  123.803655]   SET = 0, FnV = 0 [  123.806693]   EA = 0, S1PTW = 0 [  123.809818] Data abort info: [  123.812683]   ISV = 0, ISS = 0x00000145 [  123.816503]   CM = 1, WnR = 1 [  123.819455] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000805047000 [  123.825887] [00000000003fffc0] pgd=0000000803b45003, p4d=0000000803b45003, pud=0000000000000000 [  123.834586] Internal error: Oops: 96000145 [#1] PREEMPT SMP",
  "published": "2024-02-28T09:15:40Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00239,
  "epssPercentile": 0.15024,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.10.38-1",
      "fix": "DEBIAN-CVE-2021-47047",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47047",
      "released": "2024-02-28T09:15:40Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.10.38-1",
      "fix": "DEBIAN-CVE-2021-47047",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47047",
      "released": "2024-02-28T09:15:40Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.10.38-1",
      "fix": "DEBIAN-CVE-2021-47047",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47047",
      "released": "2024-02-28T09:15:40Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}