github.com/temporalio/tchannel-go did not reject TChannel call fragments containing checksum metadata but no length-prefixed argument chunks. The fragment reader left its chunk slice empty and then unconditionally selected the first element. A network peer can supply such a malformed call fragment, including as a direct initial call request after completing the standard initialization handshake. On that inbound path, the resulting unrecovered Go slice-bounds panic occurs on a library-created dispatch goroutine and terminates the hosting process. This allows remote denial of service against applications that expose the listener to untrusted peers. The impact is limited to availability; no confidentiality or integrity impact was identified.
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History
Mon, 21 Sep 2026 19:45:00 +0000
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Temporal
Temporal tchannel-go |
Mon, 21 Sep 2026 16:30:00 +0000
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ssvc
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Mon, 21 Sep 2026 11:45:00 +0000
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| Description | github.com/temporalio/tchannel-go did not reject TChannel call fragments containing checksum metadata but no length-prefixed argument chunks. The fragment reader left its chunk slice empty and then unconditionally selected the first element. A network peer can supply such a malformed call fragment, including as a direct initial call request after completing the standard initialization handshake. On that inbound path, the resulting unrecovered Go slice-bounds panic occurs on a library-created dispatch goroutine and terminates the hosting process. This allows remote denial of service against applications that expose the listener to untrusted peers. The impact is limited to availability; no confidentiality or integrity impact was identified. | |
| Title | temporalio/tchannel-go zero-chunk call fragment causes process termination | |
| Weaknesses | CWE-129 | |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: Temporal
Published: 2026-09-21T11:36:47.095Z
Updated: 2026-09-21T15:28:21.825Z
Reserved: 2026-07-22T18:08:48.925Z
Link: CVE-2026-65653
Updated: 2026-09-21T15:28:15.863Z
Status : Awaiting Analysis
Published: 2026-09-21T12:17:15.973
Modified: 2026-09-22T19:40:05.870
Link: CVE-2026-65653
No data.