{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "7733f6c32e36ff9d7adadf40001039bf219b1cbe"
            },
            {
              "fixed": "fb7110a052467098967284ef14d306810b354937"
            },
            {
              "fixed": "9b1d301fbae837bf6979a19030b81d869bb15f7a"
            },
            {
              "fixed": "cfca84f5986afceb63a3adf39d4a98e915aebbc2"
            },
            {
              "fixed": "c7e475ae3a5593c5db21b3b7dca4ba8bdac9b47f"
            },
            {
              "fixed": "5a85599ca4d2584d89dc69f4fc49303b75a42338"
            },
            {
              "fixed": "b490f0e477d26d29ed51e5dc47e3b9bd31bcb49f"
            },
            {
              "fixed": "c32f8748d70c8fc77676ad92ed76cede17bf2c48"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.4.0"
            },
            {
              "fixed": "5.15.203"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.168"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.134"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.81"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.22"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31754.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: cdns3: gadget: fix state inconsistency on gadget init failure\n\nWhen cdns3_gadget_start() fails, the DRD hardware is left in gadget mode\nwhile software state remains INACTIVE, creating hardware/software state\ninconsistency.\n\nWhen switching to host mode via sysfs:\n  echo host \u003e /sys/class/usb_role/13180000.usb-role-switch/role\n\nThe role state is not set to CDNS_ROLE_STATE_ACTIVE due to the error,\nso cdns_role_stop() skips cleanup because state is still INACTIVE.\nThis violates the DRD controller design specification (Figure22),\nwhich requires returning to idle state before switching roles.\n\nThis leads to a synchronous external abort in xhci_gen_setup() when\nsetting up the host controller:\n\n[  516.440698] configfs-gadget 13180000.usb: failed to start g1: -19\n[  516.442035] cdns-usb3 13180000.usb: Failed to add gadget\n[  516.443278] cdns-usb3 13180000.usb: set role 2 has failed\n...\n[ 1301.375722] xhci-hcd xhci-hcd.1.auto: xHCI Host Controller\n[ 1301.377716] Internal error: synchronous external abort: 96000010 [#1] PREEMPT SMP\n[ 1301.382485] pc : xhci_gen_setup+0xa4/0x408\n[ 1301.393391] backtrace:\n    ...\n    xhci_gen_setup+0xa4/0x408    \u003c-- CRASH\n    xhci_plat_setup+0x44/0x58\n    usb_add_hcd+0x284/0x678\n    ...\n    cdns_role_set+0x9c/0xbc        \u003c-- Role switch\n\nFix by calling cdns_drd_gadget_off() in the error path to properly\nclean up the DRD gadget state.",
  "id": "CVE-2026-31754",
  "modified": "2026-07-08T05:36:08.736961361Z",
  "published": "2026-05-01T14:14:45.628Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5a85599ca4d2584d89dc69f4fc49303b75a42338"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9b1d301fbae837bf6979a19030b81d869bb15f7a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b490f0e477d26d29ed51e5dc47e3b9bd31bcb49f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c32f8748d70c8fc77676ad92ed76cede17bf2c48"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c7e475ae3a5593c5db21b3b7dca4ba8bdac9b47f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cfca84f5986afceb63a3adf39d4a98e915aebbc2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fb7110a052467098967284ef14d306810b354937"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31754.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31754"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "usb: cdns3: gadget: fix state inconsistency on gadget init failure"
}