guix/gnu/packages/patches/mcrypt-CVE-2012-4409.patch

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From 4876e3a692739bb9ca00d0f500fd5f4b3eb16ce3 Mon Sep 17 00:00:00 2001
From: Tom Callaway <spot@fedoraproject.org>
Date: Fri, 7 Sep 2012 11:39:29 -0400
Subject: apply fix for CVE-2012-4409 (thanks to Raphael Geissert)
--- mcrypt-2.6.8/src/extra.c.CVE-2012-4409 2012-09-07 11:00:55.906870746 -0400
+++ mcrypt-2.6.8/src/extra.c 2012-09-07 11:00:27.967858365 -0400
@@ -242,6 +242,8 @@ int check_file_head(FILE * fstream, char
if (m_getbit(0, sflag) != 0) { /* if the first bit is set */
*salt_size = m_setbit(0, sflag, 0);
if (*salt_size > 0) {
+ if (*salt_size > sizeof(tmp_buf))
+ err_quit(_("Salt is too long\n"));
fread(tmp_buf, 1, *salt_size,
fstream);
memmove(salt, tmp_buf, *salt_size);
--
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