Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 8b8d2e08bf0d50193931afd27482a59376b66b2b before ed6d5d97dad0334a7f43d218753429cbe2f70a4f; affected 8b8d2e08bf0d50193931afd27482a59376b66b2b before b99366d74b535d0cadb1ef73e04639415d9ff3b7; affected 8b8d2e08bf0d50193931afd27482a59376b66b2b before 37382293f174b82a0616c8295e32b1fc8e13d1ed; affected 8b8d2e08bf0d50193931afd27482a59376b66b2b before c4cc6b3b0013acb3ed0b2b60e57dfae98647fe98; affected 8b8d2e08bf0d50193931afd27482a59376b66b2b before 1905f5ec3641b2b234bb63549c8ca11ab85466eb; affected 8b8d2e08bf0d50193931afd27482a59376b66b2b before 22d41b176b9989efd21c3b2d3abf6728f05b9d9a; affected 8b8d2e08bf0d50193931afd27482a59376b66b2b before 83b1362edc9d6ae376c6f36da116e2c70f2e70a6; affected 8b8d2e08bf0d50193931afd27482a59376b66b2b before f040e590c035bfd9553fe79ee9585caf1b14d67b |
| Linux / Linux | affected 3.5; unaffected 0 before 3.5; unaffected 5.10.259 through 5.10.*; unaffected 5.15.210 through 5.15.*; unaffected 6.1.176 through 6.1.*; unaffected 6.6.143 through 6.6.*; unaffected 6.12.93 through 6.12.*; unaffected 6.18.35 through 6.18.*; unaffected 7.0.12 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/ed6d5d97dad0334a7f43d218753429cbe2f70a4f
- https://git.kernel.org/stable/c/b99366d74b535d0cadb1ef73e04639415d9ff3b7
- https://git.kernel.org/stable/c/37382293f174b82a0616c8295e32b1fc8e13d1ed
- https://git.kernel.org/stable/c/c4cc6b3b0013acb3ed0b2b60e57dfae98647fe98
- https://git.kernel.org/stable/c/1905f5ec3641b2b234bb63549c8ca11ab85466eb
- https://git.kernel.org/stable/c/22d41b176b9989efd21c3b2d3abf6728f05b9d9a
- https://git.kernel.org/stable/c/83b1362edc9d6ae376c6f36da116e2c70f2e70a6
- https://git.kernel.org/stable/c/f040e590c035bfd9553fe79ee9585caf1b14d67b