fix the integer overflow

[Crispy-fried-chicken]

fix the vulnerability mentioned in #682

[slact]

...are you serious? Okay, then.

nchan/src/store/redis/hiredis/CHANGELOG.md

Lines 1 to 4 in 4461dbe

	## [1.0.2](https://github.com/redis/hiredis/tree/v1.0.2) - (2021-10-07)
	Announcing Hiredis v1.0.2, which fixes CVE-2021-32765 but returns the SONAME to the correct value of `1.0.0`.

There is nothing to fix.

[Crispy-fried-chicken]

but you can see in the newest version of hiredis, the https://github.com/redis/hiredis/blob/398e16e7cc20545a19f2af2293cc6f04310e6b7a/sds.c#L93C1-L93C78 is added which is similiar to the fix of the CVE-2021-21309, maybe you can fix it? Cause the vulnerability still exist.

[slact]

Okay okay I guess you're serious. Fine, even though there's no way to exploit this without letting Nginx accept >4Gb messages (instant DoS), which is way outside the realm of sanity, I will upgrade hiredis to the latest version.