CVE-2026-72003
CVE CVE-2026-72003EUVD EUVD-2026-59102Published 2026-08-15T05:51:34.000ZLast changed 2026-08-17T05:39:21.000ZCVSS 8.8
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 6.18.40; patch: 7.1.5; 6.16; 66f909308a7c05082919ff214a0bbe2a76aa0283 <185bb156c427d0f865d344a6d0eaa02c6d05cc57; 66f909308a7c05082919ff214a0bbe2a76aa0283 <240c8d2c717b3f8153e7e877b22a82518d78dbdc; patch: 7.2; 66f909308a7c05082919ff214a0bbe2a76aa0283 <55b26abb1fa1ec406b3ad11b43c49c7624257565; patch: 0
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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