I'm trying to run RTL_SDR on Debian 7, but I keep getting the following errors:

/usr/bin/rtl_sdr: /lib/mipsel-linux/gnu/libc.so.6: version 'GLIB_2.17' not found (required by /lib/libusb-1.0.so.0)
/usr/bin/rtl_sdr: /lib/mipsel-linux/gnu/libc.so.6: version 'GLIB_2.25' not found (required by /lib/libudev.so.1)
/usr/bin/rtl_sdr: /lib/mipsel-linux/gnu/libc.so.6: version 'GLIB_2.16' not found (required by /lib/libudev.so.1)
/usr/bin/rtl_sdr: /lib/mipsel-linux/gnu/libc.so.6: version 'GLIB_2.26' not found (required by /lib/libudev.so.1)
/usr/bin/rtl_sdr: /lib/mipsel-linux/gnu/libc.so.6: version 'GLIB_2.17' not found (required by /lib/libudev.so.1)
/usr/bin/rtl_sdr: /lib/mipsel-linux/gnu/libc.so.6: version 'GLIB_2.14' not found (required by /lib/libudev.so.1)

I also ran dpkg -l, which states this:

ii glibc 2.27-1 mipsel The GNU libc libraries

I'm running this on a MIPSEL machine, so any links to MIPSEL binaries would be appreciated, but any help in general would also be appreciated as well.

Why?

The current version of Debian is 11.5 and supports rtl-sdr 0.6 on mipsel.

Debian 7.0 was released in May 2013 and superseded by 11 other 7.x releases - but even were you on 7.11 then mipsel support presumably ended in 2017 when it migrated to oldoldstable.

Those GLib versions are all from pre-2010 so it sounds like wherever you got rtl_sdr from is even older. (Also GLib and glibc are two different things.)

The current device I'm using (A PS2) doesn't have support for newer versions of Debian at the Kernel level as far as I'm concerned.