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CVE-2026-63915: Linux

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.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: nfc: hci: fix out-of-bounds read in HCP header parsing Both nfc_hci_recv_from_llc() and nci_hci_data_received_cb() read packet->header from skb->data at function entry without first checking that the buffer holds at least one byte. A malicious NFC peer can send a 0-byte HCP frame that passes through the SHDLC layer and reaches these functions, causing an out-of-bounds heap read of packet->header. The same 0-byte frame, if queued as a non-final fragment, also causes the reassembly loop to underflow msg_len to UINT_MAX, triggering skb_over_panic() when the reassembled skb is written. Fix this by adding a pskb_may_pull() check at the entry of each function before packet->header is first accessed. The existing pskb_may_pull() checks before the reassembled hcp_skb is cast to struct hcp_packet remain in place to guard the 2-byte HCP message header.

    Засегнати продукти

    • Linux Linux: 8b8d2e08bf0d50193931afd27482a59376b66b2b преди ed6d5d97dad0334a7f43d218753429cbe2f70a4f; 8b8d2e08bf0d50193931afd27482a59376b66b2b преди b99366d74b535d0cadb1ef73e04639415d9ff3b7; 8b8d2e08bf0d50193931afd27482a59376b66b2b преди 37382293f174b82a0616c8295e32b1fc8e13d1ed; 8b8d2e08bf0d50193931afd27482a59376b66b2b преди c4cc6b3b0013acb3ed0b2b60e57dfae98647fe98; 8b8d2e08bf0d50193931afd27482a59376b66b2b преди 1905f5ec3641b2b234bb63549c8ca11ab85466eb; 8b8d2e08bf0d50193931afd27482a59376b66b2b преди 22d41b176b9989efd21c3b2d3abf6728f05b9d9a; 8b8d2e08bf0d50193931afd27482a59376b66b2b преди 83b1362edc9d6ae376c6f36da116e2c70f2e70a6; 8b8d2e08bf0d50193931afd27482a59376b66b2b преди f040e590c035bfd9553fe79ee9585caf1b14d67b
    • Linux Linux: 3.5; преди 3.5; 5.10.259 до 5.10.*; 5.15.210 до 5.15.*; 6.1.176 до 6.1.*; 6.6.143 до 6.6.*; 6.12.93 до 6.12.*; 6.18.35 до 6.18.*; 7.0.12 до 7.0.*; от 7.1 нататък

    История

    • 19 юли 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-63915: Linux | freedomonline.bg