Is there an existing issue for this?

• I have searched the existing issues

Current behaviour

crash/UB in

Expected behaviour

no crash

Steps to reproduce

• Compile with ubsan
• UBSAN_OPTIONS="suppressions=$(pwd)/test/sanitizer_suppressions/ubsan:print_stacktrace=1:halt_on_error=1:report_error_type=1" ./src/qt/bitcoin-qt
• analyzepsbt cHNidP8BACkgICAgAAEgICAgIP8DABYgICAgICAgICAgICAgICAgICAgICAgICAgIAAA

Relevant log output

    #0 0x55a94d97befd in CFeeRate::GetFee(unsigned int) const src/policy/feerate.cpp:29:63
    #1 0x55a94d4648ca in CFeeRate::GetFeePerK() const src/./policy/feerate.h:65:41
    #2 0x55a94d4648ca in analyzepsbt()::$_13::operator()(RPCHelpMan const&, JSONRPCRequest const&) const src/rpc/rawtransaction.cpp:1907:85
...
SUMMARY: UndefinedBehaviorSanitizer: signed-integer-overflow policy/feerate.cpp:29:63 in 

How did you obtain Bitcoin Core

Compiled from source

What version of Bitcoin Core are you using?

current master

Operating system and version

Linux

Machine specifications

No response