musl - possible buffer overflow in crypt() -- musl-1.2.2

Date: Thu, 4 Nov 2021 15:53:12 +0100
From: Terefang Verigorn <terefang@...il.com>
To: musl@...ts.openwall.com
Subject: possible buffer overflow in crypt() -- musl-1.2.2

hello

crypt.h declares
---
struct crypt_data {
   int initialized;
   char __buf[256];
};
---

but crypt.c uses
---
static char buf[128];
return __crypt_r(key, salt, (struct crypt_data *)buf);
---

the buf[128] should be rather buf[sizeof(crypt_data)]

--
Terefang

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