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diff --git a/src/readelf.c b/src/readelf.c
index 5f425c9..50883fe 100644
--- a/src/readelf.c
+++ b/src/readelf.c
@@ -720,7 +720,7 @@ do_core_note(struct magic_set *ms, unsigned char *nbuf, uint32_t type,
char sbuf[512];
struct NetBSD_elfcore_procinfo pi;
memset(&pi, 0, sizeof(pi));
- memcpy(&pi, nbuf + doff, descsz);
+ memcpy(&pi, nbuf + doff, MIN(descsz, sizeof(pi)));
if (file_printf(ms, ", from '%.31s', pid=%u, uid=%u, "
"gid=%u, nlwps=%u, lwp=%u (signal %u/code %u)",
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