Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: NFC: digital: Bounds check NFC-A cascade depth in SDD response handler The NFC-A anti-collision cascade in digital_in_recv_sdd_res() appends 3 or 4 bytes to target->nfcid1 on each round, but the number of cascade rounds is controlled entirely by the peer device. The peer sets the cascade tag in the SDD_RES (deciding 3 vs 4 bytes) and the cascade-incomplete bit in the SEL_RES (deciding whether another round follows). ISO 14443-3 limits NFC-A to three cascade levels and target->nfcid1 is sized accordingly (NFC_NFCID1_MAXSIZE = 10), but nothing in the driver actually enforces this. This means a malicious peer can keep the cascade running, writing past the heap-allocated nfc_target with each round. Fix this by rejecting the response when the accumulated UID would exceed the buffer. Commit e329e71013c9 ("NFC: nci: Bounds check struct nfc_target arrays") fixed similar missing checks against the same field on the NCI path.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 2c66daecc4092e6049673c281b2e6f0d5e59a94c before 9ba6bb09e00b922d902f684f575779e5433fe6e3; affected 2c66daecc4092e6049673c281b2e6f0d5e59a94c before f83b399aa05a0712e3b1569a30d3d90b3533d2ef; affected 2c66daecc4092e6049673c281b2e6f0d5e59a94c before 20663102c14566e900e1d2f679e30b7f1694f387; affected 2c66daecc4092e6049673c281b2e6f0d5e59a94c before 2819f34e08bdffb6f06a51c67948ec5737fb166a; affected 2c66daecc4092e6049673c281b2e6f0d5e59a94c before 1bec5698b55aa2be5c3b983dba657c01d0fd3dbc; affected 2c66daecc4092e6049673c281b2e6f0d5e59a94c before 5a59bf70c38ee1eb4be03bab830bbc3a6f0bd1f1; affected 2c66daecc4092e6049673c281b2e6f0d5e59a94c before 8d9d9bf3565271ca7ab9c716a94e87296177e7ba; affected 2c66daecc4092e6049673c281b2e6f0d5e59a94c before cc024a3de265ef6c58957f4990eccb9f806208cb; affected 2c66daecc4092e6049673c281b2e6f0d5e59a94c before 46ce8be2ced389bccd84bcc04a12cf2f4d0c22d1 |
| Linux / Linux | affected 3.13; unaffected 0 before 3.13; unaffected 5.10.258 through 5.10.*; unaffected 5.15.209 through 5.15.*; unaffected 6.1.175 through 6.1.*; unaffected 6.6.136 through 6.6.*; unaffected 6.12.83 through 6.12.*; unaffected 6.18.24 through 6.18.*; unaffected 6.19.14 through 6.19.*; unaffected 7.0.1 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/9ba6bb09e00b922d902f684f575779e5433fe6e3
- https://git.kernel.org/stable/c/f83b399aa05a0712e3b1569a30d3d90b3533d2ef
- https://git.kernel.org/stable/c/20663102c14566e900e1d2f679e30b7f1694f387
- https://git.kernel.org/stable/c/2819f34e08bdffb6f06a51c67948ec5737fb166a
- https://git.kernel.org/stable/c/1bec5698b55aa2be5c3b983dba657c01d0fd3dbc
- https://git.kernel.org/stable/c/5a59bf70c38ee1eb4be03bab830bbc3a6f0bd1f1
- https://git.kernel.org/stable/c/8d9d9bf3565271ca7ab9c716a94e87296177e7ba
- https://git.kernel.org/stable/c/cc024a3de265ef6c58957f4990eccb9f806208cb
- https://git.kernel.org/stable/c/46ce8be2ced389bccd84bcc04a12cf2f4d0c22d1
ADP enrichment
No English description supplied.