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Ran 11 Mar 2026 09:41PM UTC

Files 106

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Committed 11 Mar 2026 08:37PM UTC coverage: 87.259% (-0.005%) from 87.264%

Job # 22973320353.1

Build Type

push

github

Committed by

elazarg

Commit Message

Fix heap-buffer-overflow in legacy maps section parsing

The map_count computation used ceiling division when the section size
was not evenly divisible by map_record_size, which can produce a count
whose last record extends past the section data buffer. This causes a
heap-buffer-overflow when the platform's parse_maps_section callback
iterates all records.

Fix by using floor division, and add a pre-call bounds check as a
safety invariant to prevent future regressions.

Signed-off-by: Michael Agun <danielagun@microsoft.com>

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12807 of 14677 relevant lines covered (87.26%)

2391638.76 hits per line

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main: 89%

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vbpf / prevail / 22973320353 / 1
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main: 89%

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