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Patch 1 fixes nfc_llcp_parse_gb_tlv() and nfc_llcp_parse_connection_tlv(): - u8 offset wraps to zero after 255 (widened to u16) - OOB read of TLV header on truncated buffer - OOB read of value field via attacker-controlled length byte Patch 2 fixes nfc_llcp_recv_snl(): - OOB read of TLV header when tlv_len - offset == 1 - OOB read of SDREQ value via attacker-controlled length - SIZE_MAX underflow when length == 0 in service_name_len, bypassing the sn_len == 0 guard in nfc_llcp_sock_from_sn() Previously reported to security@kernel.org on 2026-05-15. Willy Tarreau advised posting to public lists as NFC is currently orphaned. Muhammad Bilal (2): nfc: llcp: fix OOB read and u8 offset wrap in TLV parsers nfc: llcp: add missing bounds checks in nfc_llcp_recv_snl() net/nfc/llcp_commands.c | 28 ++++++++++++++++++++++++++-- net/nfc/llcp_core.c | 23 +++++++++++++++++++++-- 2 files changed, 47 insertions(+), 4 deletions(-) -- 2.54.0