CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HIn the Linux kernel, the following vulnerability has been resolved: 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. A flaw was found in the Linux kernel's `rtw88` Wi-Fi driver for USB. When the `rtw_usb_write_port()` function fails to submit a USB Request Block (URB), such as during a device disconnect or out of memory conditions, the system does not properly free allocated memory. This oversight leads to memory leaks of socket buffers and transaction control blocks. Over time, this memory exhaustion could allow a local attacker to cause a denial of service by making the system unstable or unresponsive.
Multiple vulnerabilities have been discovered in the SUSE Linux kernel. These vulnerabilities can lead to data confidentiality and integrity breaches, policy circumvention, and denial of service conditions. The affected…
Multiple vulnerabilities have been discovered in the Linux kernel of SUSE. Several of these vulnerabilities allow for privilege escalation, data confidentiality breaches, and data integrity issues. These vulnerabilities…