{"apiVersion":"1.0","identifier":"CVE-2026-72003","description":"In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: cyw: fix heap overflow on a short auth frame brcmf_notify_auth_frame_rx() takes the frame length from the firmware event and copies the frame body with the management header offset subtracted: u32 mgmt_frame_len = e->datalen - sizeof(struct brcmf_rx_mgmt_data); ... memcpy(&mgmt_frame->u, frame, mgmt_frame_len - offsetof(struct ieee80211_mgmt, u)); The only length check is e->datalen >= sizeof(*rxframe), so mgmt_frame_len can be anything from 0 up. offsetof(struct ieee80211_mgmt, u) is 24. When mgmt_frame_len is below that, the subtraction wraps as an unsigned value to a huge length. The memcpy then runs far past the kzalloc-d buffer. A malicious or malfunctioning AP can make the frame short during the external SAE auth exchange, so this is a remotely triggered heap overflow. Reject frames shorter than the management header offset before the copy.","publishedAt":"2026-08-15T06:20:53","lastModifiedAt":"2026-08-17T06:17:57","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72003","cvssScore":8.8,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00339,"riskScore":0.91,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-72003","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-72003","en":"https://www.redsauce.net/en/cves/CVE-2026-72003","fr":"https://www.redsauce.net/fr/cves/CVE-2026-72003","pt":"https://www.redsauce.net/pt/cves/CVE-2026-72003","de":"https://www.redsauce.net/de/cves/CVE-2026-72003","sk":"https://www.redsauce.net/sk/cves/CVE-2026-72003","el":"https://www.redsauce.net/el/cves/CVE-2026-72003"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-72003"}}