K000162739: Linux kernel vulnerability CVE-2026-63821

Security Advisory Description In the Linux kernel, the following vulnerability has been resolved: wifi: rtw88: usb: fix memory leaks on USB write failures. When rtwusbwriteport fails to submit a USB Request Block URB e.g., due to device disconnect or ENOMEM, the completion callback is never...

CVE-2026-63821

In the Linux kernel, the wifi driver stack for rtw88/USB fixed memory leaks when USB write submissions fail. Specifically, rtw_usb_write_port() failures in rtw_usb_write_data() and rtw_usb_tx_agg_skb() could leave allocated skbs and a txcb/aggregated skbs unfreed due to a missing completion callb...