The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - wifi: rtw88: usb: fix memory leaks on USB write failures When rtw_usb_write_port() fails to submit a USB     Request Block (URB) (e.g., due to device disconnect or ENOMEM), the completion callback is never executed.
    Currently, the driver ignores the return value of rtw_usb_write_port() in rtw_usb_write_data() and     rtw_usb_tx_agg_skb(). Because these functions rely on the completion callback to free the socket buffers     (skbs) and the transaction control block (txcb), a submission failure results in: 1. A memory leak of the     allocated skb in rtw_usb_write_data(). 2. A memory leak of the txcb structure and all aggregated skbs in     rtw_usb_tx_agg_skb(). Fix this by checking the return value of rtw_usb_write_port(). If it fails,     explicitly free the skb in rtw_usb_write_data(), and properly purge the tx_ack_queue and free the txcb in     rtw_usb_tx_agg_skb(). The issue was discovered in practice during device disconnect/reconnect scenarios     and memory pressure conditions. Tested by verifying normal TX operation continues after the fix without     regressions. (CVE-2026-63821)

Note that Nessus relies on the presence of the package as reported by the vendor.

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Linux Distros Unpatched Vulnerability : CVE-2026-63821

medium Nessus Plugin ID 328198

Version 1.4

Version 1.3

Version 1.2

Version 1.1

Version 1.4 Aug 14, 2026, 5:17 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202608141717
Version 1.3 Aug 7, 2026, 5:10 PM CVSS metrics ("CVSSv2 score" set to 4.9) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C") CVSSv2 severity (based on CVE-2026-63821, severity increased from "Low" to "Medium") Detection (updated detection logic) Plugin metadata Plugin Feed: 202608071710
Version 1.2 Jul 25, 2026, 1:06 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202607251306
Version 1.1 Jul 21, 2026, 12:41 AM New Plugin Feed: 202607210041