{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "3f8fd25936ee5f52596f10d420f650c5b5e3285f"
            },
            {
              "fixed": "a4f41ceecfe68e117bae9c76c5ebc5e2b353fa56"
            },
            {
              "fixed": "c0e6bb2b0408fcac6382158ee2bd9fdc45eceee9"
            },
            {
              "fixed": "65e82fa24965b2eb6ad9412f6c530ed9a50a625f"
            },
            {
              "fixed": "9e942c8579130e62734c14338e9f451780669164"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.8.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72474.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: dma-axi-dmac: use DMA pool to manange DMA descriptor\n\nFor architectures like Microblaze or arm64 (where this IP is used),\nDMA_DIRECT_REMAP is set which means that dma_alloc_coherent() might\nremap (and hence vmalloc()) some memory. This became visible in a design\nwhere dma_direct_use_pool() is not possible.\n\nWith the above, when calling dma_free_coherent(), vunmap() would be\ncalled from softirq context and thus leading to a BUG().\n\nTo fix it, use a dma pool that is allocated in\n.device_alloc_chan_resources() and allocate blocks from it. The key\npoint is that now dma_pool_free() is used in axi_dmac_free_desc() to\nfree the blocks and that just frees the blocks from the pool in the\nsense they can be used again. In other words, no actual call to\ndma_free_coherent() happens. That only happens when destroying the pool\nin axi_dmac_free_chan_resources() which does not happen in any interrupt\ncontext.",
  "id": "CVE-2026-72474",
  "modified": "2026-08-18T03:31:04.859539154Z",
  "published": "2026-08-15T05:57:15.073Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/65e82fa24965b2eb6ad9412f6c530ed9a50a625f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9e942c8579130e62734c14338e9f451780669164"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a4f41ceecfe68e117bae9c76c5ebc5e2b353fa56"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c0e6bb2b0408fcac6382158ee2bd9fdc45eceee9"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72474.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72474"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "dmaengine: dma-axi-dmac: use DMA pool to manange DMA descriptor"
}