kernel: wifi: brcmfmac: cyw: fix heap overflow on a short auth frame

A flaw was found in the Linux kernel's brcmfmac Wi-Fi driver. A remote attacker, by sending a specially crafted short authentication frame during the SAE Simultaneous Authentication of Equals authentication exchange, could trigger a heap overflow. This vulnerability allows for potential arbitrary...

UBUNTU-CVE-2026-72003

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: cyw: fix heap overflow on a short auth frame brcmfnotifyauthframerx takes the frame length from the firmware event and copies the frame body with the management header offset subtracted: u32 mgmtframelen = e-datal...

CVE-2026-72003

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: cyw: fix heap overflow on a short auth frame brcmfnotifyauthframerx takes the frame length from the firmware event and copies the frame body with the management header offset subtracted: u32 mgmtframelen = e-datal...

CVE-2026-72003

CVE-2026-72003 observable in the Linux kernel affects the brcmfmac cyw WLAN driver. The issue arises in brcmf_notify_auth_frame_rx(), where the code derives mgmt_frame_len from e->datalen and subtracts offsetof(struct ieee80211_mgmt, u). If mgmt_frame_len is smaller than the 24-byte header off...