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CVE-2026-43255 (GCVE-0-2026-43255)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:28 – Updated: 2026-05-11 22:21
VLAI
Title
wifi: libertas: fix WARNING in usb_tx_block
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: libertas: fix WARNING in usb_tx_block The function usb_tx_block() submits cardp->tx_urb without ensuring that any previous transmission on this URB has completed. If a second call occurs while the URB is still active (e.g. during rapid firmware loading), usb_submit_urb() detects the active state and triggers a warning: 'URB submitted while active'. Fix this by enforcing serialization: call usb_kill_urb() before submitting the new request. This ensures the URB is idle and safe to reuse.
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 , < 498525d8358d6d20918787e59736d5b6a021e9fd (git)
Affected: 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 , < 2902a9b4415a6bafc9b1e5dd360f065d757a0bb7 (git)
Affected: 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 , < 948a39c95d0f8d73722910f8cdb7b6e3e9206232 (git)
Affected: 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 , < 5bfb25495e391a1be0db94b15715174fa06b93a1 (git)
Affected: 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 , < b82073564373e68c6ae3a96039fae14cd002a496 (git)
Affected: 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 , < 3308c7504e093b22e91a4468470309cee2e26b83 (git)
Affected: 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 , < fc188b44547dea4e7350833171982a6312befde9 (git)
Affected: 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 , < d66676e6ca96bf8680f869a9bd6573b26c634622 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.22
Unaffected: 0 , < 2.6.22 (semver)
Unaffected: 5.10.252 , ≤ 5.10.* (semver)
Unaffected: 5.15.202 , ≤ 5.15.* (semver)
Unaffected: 6.1.165 , ≤ 6.1.* (semver)
Unaffected: 6.6.128 , ≤ 6.6.* (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.16 , ≤ 6.18.* (semver)
Unaffected: 6.19.6 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website

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          "value": "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\u0027URB submitted while active\u0027.\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."
        }
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    "datePublished": "2026-05-06T11:28:44.522Z",
    "dateReserved": "2026-05-01T14:12:55.996Z",
    "dateUpdated": "2026-05-11T22:21:00.707Z",
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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-28T07:36:25+00:00",
      "cve": "CVE-2026-43255",
      "id": "CVE-2026-43255",
      "initial_release_date": "2026-05-06T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: wifi: libertas: fix WARNING in usb_tx_block",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43255.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-16T00:14:00Z",
      "cve": "CVE-2026-43255",
      "id": "CVE-2026-43255",
      "initial_release_date": "2026-05-07T02:16:38Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "643",
      "product_status:known_not_affected": "15",
      "product_status:recommended": "287",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-43255",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-43255.json",
      "version": "13"
    }
  }
}



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