D51660.id159517.diff
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D51660.id159517.diff
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	diff --git a/sys/kern/kern_prot.c b/sys/kern/kern_prot.c
	--- a/sys/kern/kern_prot.c
	+++ b/sys/kern/kern_prot.c
	@@ -2827,7 +2827,14 @@
	free(cr->cr_groups, M_CRED);

	cr->cr_groups = malloc(nbytes, M_CRED, M_WAITOK \| M_ZERO);
	- cr->cr_agroups = nbytes / sizeof(gid_t);
	+
	+ /*
	+ * Note that this is technically incorrect, but ngroups_max cannot be
	+ * configured at runtime today. We'll need to do crcopysafe()
	+ * differently if we for some reason ever add a sysctl that can increase
	+ * our limit to avoid unnecessary allocations.
	+ */
	+ cr->cr_agroups = MIN(ngroups_max, nbytes / sizeof(gid_t));
	}

	/*