feefrac_mul_div: Integer-overflow in FeeFrac::Div #32294

1. 
   maflcko commented at 12:53 pm on April 17, 2025: member

   https://issues.oss-fuzz.com/issues/411172125:

   0echo '//v////7/////f////////8=' | base64 --decode > /tmp/dat
   1
   2UBSAN_OPTIONS="suppressions=$(pwd)/test/sanitizer_suppressions/ubsan:print_stacktrace=1:halt_on_error=1:report_error_type=1" FUZZ=feefrac_mul_div  ./bld-cmake/bin/fuzz /tmp/dat
   

   0src/util/feefrac.h:99:21: runtime error: signed integer overflow: 9223372036854775807 + 1 cannot be represented in type 'int64_t' (aka 'long')
   

2. 
   sipa commented at 6:00 pm on April 17, 2025: member

   See #32300.
3. glozow added the label Bug on Apr 17, 2025
4. achow101 closed this on Apr 18, 2025

   ---

5. achow101 referenced this in commit 055254e212 on Apr 18, 2025

Contributors
maflcko sipa

Labels
Bug