This is (sort of) a bug in file. The problem is not being able to
distinguish between shared objects and PIE binaries. (The latter have
INTERP ELF sections and can be run directly.)
$ readelf -l /bin/true
...
Elf file type is EXEC (Executable file)
...
INTERP 0x0000000000000238 0x0000000000400238 0x0000000000400238
0x000000000000001c 0x000000000000001c R 1
[Requesting program interpreter: /lib64/ld-linux-x86-64.so.2]
...
$ readelf -l /usr/lib/x86_64-linux-gnu/libmagic.so.1.0.0
...
Elf file type is DYN (Shared object file)
...[no INTERP]...
$ readelf -l /usr/bin/ssh
...
Elf file type is DYN (Shared object file)
...
INTERP 0x0000000000000238 0x0000000000000238 0x0000000000000238
0x000000000000001c 0x000000000000001c R 1
[Requesting program interpreter: /lib64/ld-linux-x86-64.so.2]
So for mime types to distinguish, "file" needs to grow reporting of the
INTERP presence.
This has become an issue in bionic due to PIE-by-default.
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https://bugs.launchpad.net/bugs/1747711
Title:
file mis-identifies modern executables as application/x-sharedlib
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