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CVE-2026-68326: Linux, грешка в паметта

8.8

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се от съседна мрежа, без особени условия, без вход и без действие от потребителя.

CVE радар: още уязвимости от този вид

  • 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: mwifiex: bound uAP association event IEs to the event buffer mwifiex_process_uap_event() handles EVENT_UAP_STA_ASSOC by exposing the (re)association request IEs that the firmware copies into the event: sinfo->assoc_req_ies = &event->data[len]; len = (u8 *)sinfo->assoc_req_ies - (u8 *)&event->frame_control; sinfo->assoc_req_ies_len = le16_to_cpu(event->len) - (u16)len; event->len is supplied by the device firmware and is never validated, and the subtraction is unchecked. assoc_req_ies points into adapter->event_body[MAX_EVENT_SIZE], a fixed-size array embedded in the kmalloc()'d struct mwifiex_adapter. On the ap_11n_enabled path mwifiex_set_sta_ht_cap() walks these IEs with cfg80211_find_ie(), whose for_each_element() loop dereferences each element header. A firmware-reported event->len larger than the bytes actually received makes assoc_req_ies_len describe IEs that extend past event_body, so the walk reads out of the adapter slab object, a slab-out-of-bounds read (KASAN: slab-out-of-bounds in cfg80211_find_ie). An event->len smaller than the header instead makes the int subtraction negative, which wraps to a huge size_t when stored in assoc_req_ies_len. The same length is handed to cfg80211_new_sta(), so a more modest over-claim can also copy stale event_body bytes into the NL80211_CMD_NEW_STATION notification. A malicious or malfunctioning mwifiex device (USB/SDIO/PCIe) can deliver such an event while the interface is in AP/uAP mode. Validate event->len before use: reject a length that underflows the header or that would place the IEs outside the event_body[] buffer the event was copied into. event->len here is struct mwifiex_assoc_event.len, a payload field internal to this event, not the transport frame length, so it is validated in this handler rather than at the generic MWIFIEX_TYPE_EVENT receive path, which only sees the event cause and the transport frame length. The boun

Засегнати продукти

  • Linux Linux: e568634ae7ac379661c90731d480e067929420a1 преди a616616b938f7922a93e79bef16b4643c57c0922; e568634ae7ac379661c90731d480e067929420a1 преди 1ae00b6d9a6c82eb3de151d9b04ed59e06cc100f; e568634ae7ac379661c90731d480e067929420a1 преди e7e93d3e8c240bdb70c41e79d169d74dfb442843; e568634ae7ac379661c90731d480e067929420a1 преди a3f47d7c75ddad1a14621a309286f9fae3cba191; e568634ae7ac379661c90731d480e067929420a1 преди ad26c75ae25749313248f06510ebe43b5bf4adcc; e568634ae7ac379661c90731d480e067929420a1 преди d21464d93f8ba464dc3d7b4b31c6e0adcd9f659c; e568634ae7ac379661c90731d480e067929420a1 преди b6766d7ea43edf5de9d5a572bc58b631d09efe4b; e568634ae7ac379661c90731d480e067929420a1 преди f0858bfc7d3cab411a447b88e3ef970e575032c9
  • Linux Linux: 3.5; преди 3.5; 5.10.265 до 5.10.*; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.148 до 6.6.*; 6.12.101 до 6.12.*; 6.18.42 до 6.18.*; 7.1.6 до 7.1.*; от 7.2 нататък

Вид слабост

История

  • 10 август 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-68326: Linux, грешка в паметта | freedomonline.bg