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CVE-2026-90223: Linux

7.1

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.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: bound SNL TLV parsing to the skb and add length checks nfc_llcp_recv_snl() walked the SNL TLV list using a u16 offset/length pair derived from skb->len, without bounding reads to the actual skb data. Three problems followed: - For a short frame (skb->len < LLCP_HEADER_SIZE), tlv_len underflowed. - The per-TLV header (type, length) was read without checking that two bytes remained. - A declared TLV length could run past the end of the buffer, and an SDREQ with length == 0 made "service_name_len = length - 1" underflow (size_t), driving an out-of-bounds read in the following strncmp() / nfc_llcp_sock_from_sn(). The SDRES case likewise read tlv[2]/tlv[3] without a length check. A nearby NFC device can reach this without authentication; LLCP link activation happens automatically after NFC-DEP. Walk the TLV list by pointer, bounded by skb_tail_pointer() over the linear skb data, and validate each TLV declared length before use. Add explicit length checks for SDREQ (>= 1) and SDRES (exactly 2). Found by 0sec automated security-research tooling (https://0sec.ai).

    Засегнати продукти

    • Linux Linux: 19cfe5843e86cc95542d9d875c9386e197956d75 преди 88b36d36e12c9ba76decdb580d9c1907c084e587; 19cfe5843e86cc95542d9d875c9386e197956d75 преди 587fc2a5a35b41883b22b8f808fe5d345208914b; 19cfe5843e86cc95542d9d875c9386e197956d75 преди f04ac9bf2379f3e2470c400c235eb12f74891bef; 19cfe5843e86cc95542d9d875c9386e197956d75 преди 02030f95820c42431280f4f945ff34247fb840ff; 19cfe5843e86cc95542d9d875c9386e197956d75 преди 99fdb5c2522f365efa199d0117b641e35097041e; 19cfe5843e86cc95542d9d875c9386e197956d75 преди 749a9048bf51a668ec3ab6c0392ba32325607281; 19cfe5843e86cc95542d9d875c9386e197956d75 преди eeb16fb24cfe67947b832fd9ada5f488afc72579; 19cfe5843e86cc95542d9d875c9386e197956d75 преди f4c7f37f0ab990952539dc68d931d65c3657600a
    • Linux Linux: 3.8; преди 3.8; 5.10.270 до 5.10.*; 5.15.221 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 до 6.6.*; 6.12.110 до 6.12.*; 6.18.52 до 6.18.*; 7.2.6 до 7.2.*; 7.3 до *

    История

    • 17 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-90223: Linux | freedomonline.bg