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encoding: Check reallocations for overflow

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This commit is contained in:
Nick Wellnhofer 2024-12-15 21:34:59 +01:00
parent 1c51f3d3f1
commit df0f16fa26
1 changed files with 7 additions and 6 deletions
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13
encoding.c
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@ -45,6 +45,7 @@
#include "private/enc.h"
#include "private/entities.h"
#include "private/error.h"
#include "private/memory.h"
#ifdef LIBXML_ICU_ENABLED
#include <unicode/ucnv.h>
@ -424,13 +425,13 @@ xmlAddEncodingAlias(const char *name, const char *alias) {
if (xmlCharEncodingAliasesNb >= xmlCharEncodingAliasesMax) {
xmlCharEncodingAliasPtr tmp;
size_t newSize = xmlCharEncodingAliasesMax ?
xmlCharEncodingAliasesMax * 2 :
20;
int newSize;
tmp = (xmlCharEncodingAliasPtr)
xmlRealloc(xmlCharEncodingAliases,
newSize * sizeof(xmlCharEncodingAlias));
newSize = xmlGrowCapacity(xmlCharEncodingAliasesMax, sizeof(tmp[0]),
20, XML_MAX_ITEMS);
if (newSize < 0)
return(-1);
tmp = xmlRealloc(xmlCharEncodingAliases, newSize * sizeof(tmp[0]));
if (tmp == NULL)
return(-1);
xmlCharEncodingAliases = tmp;