Validate reconstructed chunk sizes #848
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Signed-off-by: Peter Hillman <[email protected]>
Signed-off-by: Peter Hillman <[email protected]>
meshula
approved these changes
Oct 12, 2020
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When reconstructing the chunk offset tables, the size values could be negative or so large that arithmetic operations overflow 64 bit ints, causing a warning from sanitizers. It seems to be possible to use the overflow to cause an infinite loop during chunk reconstruction.
(No error report exists: spotted from a spurious message when running a fuzz tester.)
Signed-off-by: Peter Hillman [email protected]