{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "9982464379e81ece51ced03ebecbbcd34ea367a6"
            },
            {
              "fixed": "860887d22890417d43ef8298f0cc4865e29b54de"
            },
            {
              "fixed": "9a4be91e5bb032b34cb3c962f6d4f82e7ef09364"
            },
            {
              "fixed": "fb12c87ae855346321af72e57a93c146205f1090"
            },
            {
              "fixed": "f50a2b9e57a751e70ae9a272875d80d39eaccd6a"
            },
            {
              "fixed": "6bd21ec8549a5854dd64204a66289952917a924c"
            },
            {
              "fixed": "5c342437ea44bb829680ca9e4f683dd5b325b219"
            },
            {
              "fixed": "c73c3fc1c7ca5a927639f0884624cb244ba791e4"
            },
            {
              "fixed": "2a665946e0407a05a3f81bd56a08553c446498e0"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.1.0"
            },
            {
              "fixed": "5.10.265"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.216"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.183"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.148"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.101"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.42"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68403.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmfmac: initialize SDIO data work before cleanup\n\nbrcmf_sdio_probe() stores the newly allocated bus in sdiodev-\u003ebus before\nallocating the ordered workqueue. If that allocation fails, the function\njumps to fail and calls brcmf_sdio_remove().\n\nbrcmf_sdio_remove() unconditionally cancels bus-\u003edatawork. Initialize the\nwork item before the first failure path that can reach brcmf_sdio_remove(),\nso the cleanup path always observes a valid work object.\n\nThis issue was found by our static analysis tool and then confirmed by\nmanual review of the probe error path and the remove-time work drain. The\nproblem pattern is an early setup failure that reaches a cleanup helper\nwhich cancels an embedded work item before its initializer has run.\n\nA QEMU PoC forced alloc_ordered_workqueue() to fail at the same point in\nbrcmf_sdio_probe(), before INIT_WORK(\u0026bus-\u003edatawork) is reached. The\nresulting fail path calls brcmf_sdio_remove(), and DEBUG_OBJECTS reports\nthe invalid work drain with brcmf_sdio_probe() and brcmf_sdio_remove() in\nthe stack.",
  "id": "CVE-2026-68403",
  "modified": "2026-08-21T03:30:38.504853557Z",
  "published": "2026-08-10T12:04:23.150Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2a665946e0407a05a3f81bd56a08553c446498e0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5c342437ea44bb829680ca9e4f683dd5b325b219"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6bd21ec8549a5854dd64204a66289952917a924c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/860887d22890417d43ef8298f0cc4865e29b54de"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9a4be91e5bb032b34cb3c962f6d4f82e7ef09364"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c73c3fc1c7ca5a927639f0884624cb244ba791e4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f50a2b9e57a751e70ae9a272875d80d39eaccd6a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fb12c87ae855346321af72e57a93c146205f1090"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68403.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68403"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "wifi: brcmfmac: initialize SDIO data work before cleanup"
}