CVE-2026-80798 nfc: llcp: reject PDUs shorter than the LLCP header

In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: reject PDUs shorter than the LLCP header Every LLCP PDU begins with a two-byte header DSAP/SSAP + PTYPE, but the receive path never checked that a frame is at least LLCPHEADERSIZE bytes before parsing it. nfcllcprxskb...

CVE-2026-80798

In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: reject PDUs shorter than the LLCP header Every LLCP PDU begins with a two-byte header DSAP/SSAP + PTYPE, but the receive path never checked that a frame is at least LLCPHEADERSIZE bytes before parsing it. nfcllcprxskb...

CVE-2026-80798 nfc: llcp: reject PDUs shorter than the LLCP header

In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: reject PDUs shorter than the LLCP header Every LLCP PDU begins with a two-byte header DSAP/SSAP + PTYPE, but the receive path never checked that a frame is at least LLCPHEADERSIZE bytes before parsing it. nfcllcprxskb...

CVE-2026-80798

CVE-2026-80798 affects the Linux kernel NFC LLCP subsystem . The receive path in nfc_llcp_rx_skb() never validated that a frame is at least LLCP_HEADER_SIZE bytes before parsing. When a short frame is received, the computation skb->len - LLCP_HEADER_SIZE underflows (as size_t), causing the TLV...

PT-2026-85639

In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: reject PDUs shorter than the LLCP header Every LLCP PDU begins with a two-byte header DSAP/SSAP + PTYPE, but the receive path never checked that a frame is at least LLCP HEADER SIZE bytes before parsing it. nfc llcp rx...