This bug should not have been merged wiht #98017, #165448, #166306, #171248, #177604, or #177871; it is an unrelated problem. Those bugs are caused by corrupted .bin files, but this problem is not fixed by the deletion of those files.
This bug is most probably caused by line 29 of apt-pkg/sourcelist.cc, where a static array of 10 elements is allocated; more package entries than that causes a buffer overflow condition. This may have security implications, and should probably be fixed ASAP. I suggest the following be done immediately: retitle 97924 sources.list is parsed into fixed-size array severity 97924 grave unmerge 97924 tags 97924 +security thank you
