{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "8e5cfe547bf3beeb29d9608be68d22dff2b5012b"
            },
            {
              "fixed": "4c5b61b9df6ab33b55f228e1b6579cefad11a9f7"
            },
            {
              "fixed": "ac2ab58a79bf2401ae8c5d1c030bf0a5a376f43a"
            },
            {
              "fixed": "4814f28c45f58a71a80d09b80a60da6a063b539a"
            },
            {
              "fixed": "b08c3d5ee7feadd821208f7c2c1ec02a16ce5878"
            },
            {
              "fixed": "f63de9054da858d57054474c32464106f8375e0d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.3.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.51"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90035.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: fix division by zero in get_estimated_bw()\n\nget_estimated_bw() divides by link-\u003edpia_bw_alloc_config.bw_granularity,\nwhich is zeroed by reset_bw_alloc_struct() and only populated once\nDP_TUNNELING_BW_ALLOC_CAP_CHANGED has been handled.\n\nlink_dp_dpia_handle_bw_alloc_status(), the DPCD interrupt handler,\ncalls get_estimated_bw() whenever DP_TUNNELING_ESTIMATED_BW_CHANGED\nis set, independently of whether DP_TUNNELING_BW_ALLOC_CAP_CHANGED\nhas ever fired for that link. A connected USB4/DPIA tunneling device\nthat reports an estimated-bandwidth change before ever reporting a\ncapability change drives a division by zero in this IRQ path.\n\nlink_dpia_send_bw_alloc_request() already guards the same\nbw_granularity division; add the identical guard here rather than\nintroducing a new pattern.\n\n(cherry picked from commit f2a961457c33dc34223aad5c9e8971de34a4eed3)",
  "id": "CVE-2026-90035",
  "modified": "2026-09-18T03:30:20.474953993Z",
  "published": "2026-09-16T10:33:35.281Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4814f28c45f58a71a80d09b80a60da6a063b539a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4c5b61b9df6ab33b55f228e1b6579cefad11a9f7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ac2ab58a79bf2401ae8c5d1c030bf0a5a376f43a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b08c3d5ee7feadd821208f7c2c1ec02a16ce5878"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f63de9054da858d57054474c32464106f8375e0d"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90035.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90035"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "drm/amd/display: fix division by zero in get_estimated_bw()"
}