Integer overflow while reading long profile

By jan.kolar , 19 June, 2024
Forums
Gurux.DLMS

While reading long profile using ciphered association and GetRequest of type Get-request-next, the operation was terminated with error. After debugging I found that variable m_CipherIndex in class CGXReplyData which is of type unsigned short overflows when length of data is more than 65535. After changing data type to unsigned long, not only for variable but also for getter and setter and calls to setter function, all is OK.

Kurumi

2 years 3 months ago

Hi,

It's possible to change m_CipherIndex to uint32_t, but I have to say that it's better to read profile generics in parts. It usually causes problems if all the data is try to read from the buffer.

This is changed to uint32_t in the next release.

BR,
Mikko