CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се от съседна мрежа, без особени условия, без вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
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.
Засегнати продукти
- Linux Linux: 66f909308a7c05082919ff214a0bbe2a76aa0283 преди 55b26abb1fa1ec406b3ad11b43c49c7624257565; 66f909308a7c05082919ff214a0bbe2a76aa0283 преди 185bb156c427d0f865d344a6d0eaa02c6d05cc57; 66f909308a7c05082919ff214a0bbe2a76aa0283 преди 240c8d2c717b3f8153e7e877b22a82518d78dbdc
- Linux Linux: 6.16; преди 6.16; 6.18.40 до 6.18.*; 7.1.5 до 7.1.*; 7.2 до *
Вид слабост
История
- 15 август 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-72003
- https://nvd.nist.gov/vuln/detail/CVE-2026-72003
- https://git.kernel.org/stable/c/55b26abb1fa1ec406b3ad11b43c49c7624257565
- https://git.kernel.org/stable/c/185bb156c427d0f865d344a6d0eaa02c6d05cc57
- https://git.kernel.org/stable/c/240c8d2c717b3f8153e7e877b22a82518d78dbdc