When the syslog function is passed a crafted input string larger than 1024 bytes, it reads uninitialized memory from the heap and prints it to the target log file, potentially revealing a portion of the contents of the heap.
Created glibc tracking bugs for this issue:
Affects: fedora-all [bug 2123395]
Created zig tracking bugs for this issue:
Affects: fedora-all [bug 2123396]