From: Ondřej Surý <ondrej@isc.org>
Date: Fri, 24 Oct 2025 20:20:51 +0000 (+0200)
Subject: chg: dev: Fix assertion failure from arc4random_uniform with invalid limit
X-Git-Tag: v9.21.15~37
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=08ccc8bea81d14956dda6a24b39aaebac967f01b;p=thirdparty%2Fbind9.git

chg: dev: Fix assertion failure from arc4random_uniform with invalid limit

When the arc4random_uniform() is called on NetBSD with upper_bound that
makes no sense statistically (0 or 1), the call crashes the calling
program.  Fix this by returning 0 when upper bound is < 2 as does Linux,
FreeBSD and NetBSD.  (Hint: System CSPRNG should never crash.)

Closes #5596

Merge branch '5596-fix-isc_random_uniform-on-NetBSD' into 'main'

See merge request isc-projects/bind9!11147
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08ccc8bea81d14956dda6a24b39aaebac967f01b