CVE-2026-100076

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

staging: rtl8723bs: fix xmit_frame/xmit_buf leaks on mgnt-frame error paths

issue_beacon(), issue_probersp() and issue_asocrsp() obtain a management

xmit_frame together with its xmit_buf from the driver's fixed-size

management-TX pools via alloc_mgtxmitframe(). On the normal path the frame

is handed to dump_mgntframe(), which transfers ownership and eventually

returns both objects to their pools (the frame and, for beacons, the buf

in rtl8723bs_mgnt_xmit(); other bufs via the pending-xmitbuf/TX-completion

path).

Several error/edge paths return early after a successful

alloc_mgtxmitframe() but before dump_mgntframe(), so ownership is never

transferred and neither object is freed:

- issue_beacon(): beacon larger than 512 bytes

- issue_probersp(): cur_network->ie_length > MAX_IE_SZ

- issue_probersp(): kzalloc() of the SSID scratch buffer fails

- issue_asocrsp(): pkt_type is neither ASSOCRSP nor REASSOCRSP

Bec

/// Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// Affected products

/// References