[stable-v2.12] zephyr: fix overflow and overlap checks in memcpy_s#9771
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kv2019i merged 1 commit intothesofproject:stable-v2.12from Jan 9, 2025
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This patch addresses an issue in the `memcpy_s` function within the Zephyr RTOS string header. The issue was identified during IPC3 fuzz testing with UndefinedBehaviorSanitizer enabled. Changes include: - Adding `stdint.h` for `uintptr_t` type. - Adding checks to prevent overflow in pointer arithmetic. - Adjusting overlap checks to avoid overflow. These changes ensure that the `memcpy_s` function correctly handles edge cases, preventing undefined behavior due to pointer arithmetic overflow and memory overlap. Fixes thesofproject#9768 Signed-off-by: Tomasz Leman <tomasz.m.leman@intel.com> (cherry picked from commit 7d11802) Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
kv2019i
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abonislawski,
dbaluta,
iuliana-prodan and
lyakh
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tmleman
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Jan 9, 2025
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FYI @lyakh @cgturner1 interesting in stable-v2.12 branch the github flows pass without space issues, so it must be some recent change in SOF main that has caused the space requirements to jump up. |
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This patch addresses an issue in the
memcpy_sfunction within the Zephyr RTOS string header. The issue was identified during IPC3 fuzz testing with UndefinedBehaviorSanitizer enabled.Changes include:
stdint.hforuintptr_ttype.These changes ensure that the
memcpy_sfunction correctly handles edge cases, preventing undefined behavior due to pointer arithmetic overflow and memory overlap.Fixes #9768
(cherry picked from commit 7d11802)