{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "876c9d3aeb989cf1961f2c228d309ba5dcfb1172"
            },
            {
              "fixed": "498525d8358d6d20918787e59736d5b6a021e9fd"
            },
            {
              "fixed": "2902a9b4415a6bafc9b1e5dd360f065d757a0bb7"
            },
            {
              "fixed": "948a39c95d0f8d73722910f8cdb7b6e3e9206232"
            },
            {
              "fixed": "5bfb25495e391a1be0db94b15715174fa06b93a1"
            },
            {
              "fixed": "b82073564373e68c6ae3a96039fae14cd002a496"
            },
            {
              "fixed": "3308c7504e093b22e91a4468470309cee2e26b83"
            },
            {
              "fixed": "fc188b44547dea4e7350833171982a6312befde9"
            },
            {
              "fixed": "d66676e6ca96bf8680f869a9bd6573b26c634622"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.22"
            },
            {
              "fixed": "5.10.252"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.202"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.165"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.128"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.75"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.16"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43255.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: libertas: fix WARNING in usb_tx_block\n\nThe function usb_tx_block() submits cardp-\u003etx_urb without ensuring that\nany previous transmission on this URB has completed. If a second call\noccurs while the URB is still active (e.g. during rapid firmware loading),\nusb_submit_urb() detects the active state and triggers a warning:\n'URB submitted while active'.\n\nFix this by enforcing serialization: call usb_kill_urb() before\nsubmitting the new request. This ensures the URB is idle and safe to reuse.",
  "id": "CVE-2026-43255",
  "modified": "2026-07-08T05:36:14.713270842Z",
  "published": "2026-05-06T11:28:44.522Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2902a9b4415a6bafc9b1e5dd360f065d757a0bb7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3308c7504e093b22e91a4468470309cee2e26b83"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/498525d8358d6d20918787e59736d5b6a021e9fd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5bfb25495e391a1be0db94b15715174fa06b93a1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/948a39c95d0f8d73722910f8cdb7b6e3e9206232"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b82073564373e68c6ae3a96039fae14cd002a496"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d66676e6ca96bf8680f869a9bd6573b26c634622"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fc188b44547dea4e7350833171982a6312befde9"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43255.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43255"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "wifi: libertas: fix WARNING in usb_tx_block"
}