[XS] Change in osmo-ccid-firmware[master]: ccid_device: Reject XfrBlock with zero-length data - gerrit-log

25 Feb 2026


      Attention is currently required from: Hoernchen, jolly, laforge, lynxis lazus.
dexter has posted comments on this change by laforge. ( https://gerrit.osmocom.org/c/osmo-ccid-firmware/+/42192?usp=email )
Change subject: ccid_device: Reject XfrBlock with zero-length data
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Patch Set 1:
(1 comment)
Patchset:
PS1:
...
Ah indeed, 4 bytes is only possible for an APDU but not a TPDU. See ETSI TS 102 221 Section 7.3.1.1. […]
Yes, that is correct. I would assume that CCID sees only TPDUs, so if there is something below 5 bytes, it should be indeed rejected.
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Gerrit-Project: osmo-ccid-firmware
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Gerrit-Change-Id: I65df88477e4b1c03dc20a8d41e5cbd1c9f363ba8
Gerrit-Change-Number: 42192
Gerrit-PatchSet: 1
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Gerrit-Reviewer: Hoernchen ewild@sysmocom.de
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