CVE-2026-63915
CVE CVE-2026-63915EUVD EUVD-2026-45688Published 2026-07-19T14:55:19.000ZLast changed 2026-08-05T12:37:09.000ZCVSS 8.8
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux 8b8d2e08bf0d50193931afd27482a59376b66b2b <83b1362edc9d6ae376c6f36da116e2c70f2e70a6; 8b8d2e08bf0d50193931afd27482a59376b66b2b <1905f5ec3641b2b234bb63549c8ca11ab85466eb; 8b8d2e08bf0d50193931afd27482a59376b66b2b <ed6d5d97dad0334a7f43d218753429cbe2f70a4f; patch: 7.0.12; 8b8d2e08bf0d50193931afd27482a59376b66b2b <b99366d74b535d0cadb1ef73e04639415d9ff3b7; 8b8d2e08bf0d50193931afd27482a59376b66b2b <22d41b176b9989efd21c3b2d3abf6728f05b9d9a; patch: 5.10.259; patch: 5.15.210; 8b8d2e08bf0d50193931afd27482a59376b66b2b <c4cc6b3b0013acb3ed0b2b60e57dfae98647fe98; patch: 6.18.35; patch: 7.1; 8b8d2e08bf0d50193931afd27482a59376b66b2b <37382293f174b82a0616c8295e32b1fc8e13d1ed; 8b8d2e08bf0d50193931afd27482a59376b66b2b <f040e590c035bfd9553fe79ee9585caf1b14d67b; 3.5; patch: 6.1.176; patch: 0; patch: 6.12.93; patch: 6.6.143
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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