{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "79636caad3618e2b38457f6e298c9b31ba82b489"
            },
            {
              "fixed": "68bf3ebd8e7020dae58e8aa14c7d482738bff9a8"
            },
            {
              "fixed": "45507dcb0847e96add4455274b12df0eca6590b4"
            },
            {
              "fixed": "35e0103177826430b5df888b1506239d41e76ab5"
            },
            {
              "fixed": "c1f4d7763cdf1b9e0d35c14aa6f52d0512a36319"
            },
            {
              "fixed": "57d29044d0f29a76c6ec0c112c8c7371d5608dc7"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.6.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90387.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nswiotlb: Preserve allocation virtual address for dynamic pools\n\nswiotlb_alloc_tlb() can allocate from the DMA atomic pool when a decrypted\npool is needed from atomic context. With CONFIG_DMA_DIRECT_REMAP, the\natomic pool is backed by remapped virtual addresses, which are not the same\nas the direct-map addresses returned by phys_to_virt().\n\nswiotlb_init_io_tlb_pool() currently reconstructs the pool virtual address\nfrom the physical start address. For atomic-pool backed allocations this\nstores the wrong address in pool-\u003evaddr. Later, swiotlb_free_tlb() passes\nthat address to dma_free_from_pool(), which will fail to recognize the\nchunk\n\nPass the virtual address returned by the allocation path into\nswiotlb_init_io_tlb_pool(), and store that address in pool-\u003evaddr. This\nkeeps the pool free path using the same virtual address as the allocator.",
  "id": "CVE-2026-90387",
  "modified": "2026-09-19T03:30:27.664729123Z",
  "published": "2026-09-17T16:09:22.493Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/35e0103177826430b5df888b1506239d41e76ab5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/45507dcb0847e96add4455274b12df0eca6590b4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/57d29044d0f29a76c6ec0c112c8c7371d5608dc7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/68bf3ebd8e7020dae58e8aa14c7d482738bff9a8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c1f4d7763cdf1b9e0d35c14aa6f52d0512a36319"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90387.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90387"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "swiotlb: Preserve allocation virtual address for dynamic pools"
}