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opj_compress/opj_uncompress: fix integer overflow in num_images
CVE-2021-29338
Bug 783513
Upstream: https://github.com/uclouvain/openjpeg/commit/79c7d7af598b778c3cdcb455df23d50efc95eb3c
--- a/src/bin/jp2/opj_compress.c
+++ b/src/bin/jp2/opj_compress.c
@@ -1959,9 +1959,9 @@ int main(int argc, char **argv)
num_images = get_num_images(img_fol.imgdirpath);
dirptr = (dircnt_t*)malloc(sizeof(dircnt_t));
if (dirptr) {
- dirptr->filename_buf = (char*)malloc(num_images * OPJ_PATH_LEN * sizeof(
+ dirptr->filename_buf = (char*)calloc(num_images, OPJ_PATH_LEN * sizeof(
char)); /* Stores at max 10 image file names*/
- dirptr->filename = (char**) malloc(num_images * sizeof(char*));
+ dirptr->filename = (char**) calloc(num_images, sizeof(char*));
if (!dirptr->filename_buf) {
ret = 0;
goto fin;
--- a/src/bin/jp2/opj_decompress.c
+++ b/src/bin/jp2/opj_decompress.c
@@ -1374,14 +1374,13 @@ int main(int argc, char **argv)
return EXIT_FAILURE;
}
/* Stores at max 10 image file names */
- dirptr->filename_buf = (char*)malloc(sizeof(char) *
- (size_t)num_images * OPJ_PATH_LEN);
+ dirptr->filename_buf = calloc((size_t) num_images, sizeof(char) * OPJ_PATH_LEN);
if (!dirptr->filename_buf) {
failed = 1;
goto fin;
}
- dirptr->filename = (char**) malloc((size_t)num_images * sizeof(char*));
+ dirptr->filename = (char**) calloc((size_t) num_images, sizeof(char*));
if (!dirptr->filename) {
failed = 1;
--- a/src/bin/jp2/opj_dump.c
+++ b/src/bin/jp2/opj_dump.c
@@ -515,13 +515,14 @@ int main(int argc, char *argv[])
if (!dirptr) {
return EXIT_FAILURE;
}
- dirptr->filename_buf = (char*)malloc((size_t)num_images * OPJ_PATH_LEN * sizeof(
- char)); /* Stores at max 10 image file names*/
+ /* Stores at max 10 image file names*/
+ dirptr->filename_buf = (char*) calloc((size_t) num_images,
+ OPJ_PATH_LEN * sizeof(char));
if (!dirptr->filename_buf) {
free(dirptr);
return EXIT_FAILURE;
}
- dirptr->filename = (char**) malloc((size_t)num_images * sizeof(char*));
+ dirptr->filename = (char**) calloc((size_t) num_images, sizeof(char*));
if (!dirptr->filename) {
goto fails;
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