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opensc: fix use realloc after free detected by gcc>=12

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Duncaen 2022-10-08 12:12:48 +02:00
parent 35a762eb1a
commit afd349c38f
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2 changed files with 31 additions and 1 deletions
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30
srcpkgs/opensc/patches/0f7082ea46562b15221f428860b993e0519c6cbd.patch Normal file
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@ -0,0 +1,30 @@
From 0f7082ea46562b15221f428860b993e0519c6cbd Mon Sep 17 00:00:00 2001
From: Veronika Hanulikova <vhanulik@redhat.com>
Date: Wed, 16 Feb 2022 11:59:27 +0100
Subject: [PATCH] Fix usage of pointer after realloc
---
src/sm/sm-iso.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/src/sm/sm-iso.c b/src/sm/sm-iso.c
index 5baded77c6..2c3f6bcabd 100644
--- a/src/sm/sm-iso.c
+++ b/src/sm/sm-iso.c
@@ -181,13 +181,14 @@ static int format_le(size_t le, struct sc_asn1_entry *le_entry,
static int prefix_buf(u8 prefix, u8 *buf, size_t buflen, u8 **cat)
{
- u8 *p;
+ u8 *p = NULL;
+ int ptr_same = *cat == buf;
p = realloc(*cat, buflen + 1);
if (!p)
return SC_ERROR_OUT_OF_MEMORY;
- if (*cat == buf) {
+ if (ptr_same) {
memmove(p + 1, p, buflen);
} else {
/* Flawfinder: ignore */

2
srcpkgs/opensc/template
View file

@ -1,7 +1,7 @@
# Template file for 'opensc'
pkgname=opensc
version=0.22.0
revision=1
revision=2
wrksrc="OpenSC-${version}"
build_style=gnu-configure
configure_args="--enable-man --enable-sm --enable-static=no --enable-doc