CVE-2026-53217 (GCVE-0-2026-53217)
Vulnerability from cvelistv5
Published
2026-06-25 08:39
Modified
2026-08-05 12:34
Severity ?
8.6 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Summary
In the Linux kernel, the following vulnerability has been resolved: net: mvpp2: sync RX data at the hardware packet offset mvpp2 programs the RX queue packet offset, so hardware writes received data at dma_addr + MVPP2_SKB_HEADROOM. The current CPU sync starts at dma_addr and only covers rx_bytes + MVPP2_MH_SIZE bytes, which syncs the unused headroom and misses the same number of bytes at the packet tail. On non-coherent DMA systems this can leave the CPU reading stale cache contents for the end of the received frame. Use dma_sync_single_range_for_cpu() with MVPP2_SKB_HEADROOM as the range offset so the sync covers the Marvell header and packet data actually written by hardware.
References
Impacted products
Vendor Product Version
Linux Linux Version: e1921168bbd4810de4197446e52f652cd0dd9541
Version: e1921168bbd4810de4197446e52f652cd0dd9541
Version: e1921168bbd4810de4197446e52f652cd0dd9541
Version: e1921168bbd4810de4197446e52f652cd0dd9541
Version: e1921168bbd4810de4197446e52f652cd0dd9541
Version: e1921168bbd4810de4197446e52f652cd0dd9541
Version: e1921168bbd4810de4197446e52f652cd0dd9541
Version: e1921168bbd4810de4197446e52f652cd0dd9541
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c"
          ],
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          ],
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          "vendor": "Linux",
          "versions": [
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              "version": "5.5"
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              "version": "0",
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              "version": "6.1.176",
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              "version": "7.0.13",
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            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.259",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mvpp2: sync RX data at the hardware packet offset\n\nmvpp2 programs the RX queue packet offset, so hardware writes received\ndata at dma_addr + MVPP2_SKB_HEADROOM. The current CPU sync starts at\ndma_addr and only covers rx_bytes + MVPP2_MH_SIZE bytes, which syncs the\nunused headroom and misses the same number of bytes at the packet tail.\n\nOn non-coherent DMA systems this can leave the CPU reading stale cache\ncontents for the end of the received frame.\n\nUse dma_sync_single_range_for_cpu() with MVPP2_SKB_HEADROOM as the range\noffset so the sync covers the Marvell header and packet data actually\nwritten by hardware."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The vulnerable code is in the Ethernet RX path and is reached by packets received on an affected mvpp2 network interface. A remote peer can trigger it by sending network traffic to a system using this driver.\nAC:L - On affected non-coherent DMA deployments, exploitation only requires sending received frames that traverse the normal RX/NAPI path. There is no race or attacker-uncontrolled timing requirement in the vulnerable path.\nPR:N - No local privileges or authentication are required to reach the receive path. The attacker only needs network reachability to the affected interface.\nUI:N - Packet reception and processing happen automatically once the interface is up. No user action is required.\nS:U - The bug affects packet data handled within the same kernel/network-device security authority. It does not cross a VM, IOMMU, or other separate security boundary.\nC:H - The incorrect DMA sync can leave stale cache contents in the tail of received skbs, potentially exposing previous packet-buffer contents through delivery, forwarding, or reflection. Repeated remote triggering can disclose more than a few bounded bytes of network data over time.\nI:L - The CPU-visible packet tail can differ from the actual frame written by hardware, corrupting data delivered to XDP, the network stack, or applications. This is packet/data integrity loss, but not an arbitrary kernel memory write or control-flow primitive.\nA:L - An attacker can repeatedly cause corrupted received packets, leading to packet drops, protocol failures, or degraded network service. The investigated path does not indicate a kernel panic, hang, or reliable full-system DoS."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:34:13.595Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/60412bdd1b2576659eac23a23d2d9ff96228a643"
        },
        {
          "url": "https://git.kernel.org/stable/c/19f8bc139e9b149d1e5bf75ae761d1bb8dd3e7d8"
        },
        {
          "url": "https://git.kernel.org/stable/c/a3ad9b5767c89531fc7dae951b51b0933dcf7051"
        },
        {
          "url": "https://git.kernel.org/stable/c/bede0f481b9137d73d1cf64309cbe4b94818a5d6"
        },
        {
          "url": "https://git.kernel.org/stable/c/23548007b3c66d628fc7d6b80d1e23be04ea10d9"
        },
        {
          "url": "https://git.kernel.org/stable/c/a13199fa224e9f776f4005d5037df03aa9ea8f37"
        },
        {
          "url": "https://git.kernel.org/stable/c/e302206ad84a407a7e5f3f6fe767ff5efaace689"
        },
        {
          "url": "https://git.kernel.org/stable/c/180235600934bef6add3be637c296d6cf3272e67"
        }
      ],
      "title": "net: mvpp2: sync RX data at the hardware packet offset",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53217",
    "datePublished": "2026-06-25T08:39:20.186Z",
    "dateReserved": "2026-06-09T07:44:35.392Z",
    "dateUpdated": "2026-08-05T12:34:13.595Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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