[v25.2.x] [CORE-15247] kafka: add size validation to string & arrays read off the wire#29228
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michael-redpanda merged 3 commits intoJan 12, 2026
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For string, array, and number of tags. (cherry picked from commit 13d3f76)
(cherry picked from commit 61bfa92)
Add wire_validation_test.cc with tests that verify bounds checking and error handling in the Kafka protocol decoder. Tests cover: - Array length validation (exceeds buffer, negative, max int32) - Flex array validation (exceeds buffer, zero length) - String/flex string validation (exceeds buffer, negative/zero length) - Bytes/flex bytes validation - Tagged fields validation (count exceeds buffer, duplicate/non-ascending IDs, size exceeds buffer) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> (cherry picked from commit a78c238)
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Backport of PR #29208