diff options
Diffstat (limited to 'gd-2.2.5-gdImageBmpPtr-double-free.patch')
| -rw-r--r-- | gd-2.2.5-gdImageBmpPtr-double-free.patch | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/gd-2.2.5-gdImageBmpPtr-double-free.patch b/gd-2.2.5-gdImageBmpPtr-double-free.patch new file mode 100644 index 0000000..80f9712 --- /dev/null +++ b/gd-2.2.5-gdImageBmpPtr-double-free.patch @@ -0,0 +1,73 @@ +From ac16bdf2d41724b5a65255d4c28fb0ec46bc42f5 Mon Sep 17 00:00:00 2001 +From: Mike Frysinger <vapier@gentoo.org> +Date: Sat, 14 Jul 2018 13:54:08 -0400 +Subject: [PATCH] bmp: check return value in gdImageBmpPtr + +Closes #447. +--- + src/gd_bmp.c | 17 ++++++++++++++--- + 1 file changed, 14 insertions(+), 3 deletions(-) + +diff --git a/src/gd_bmp.c b/src/gd_bmp.c +index bde0b9d3..78f40d9a 100644 +--- a/src/gd_bmp.c ++++ b/src/gd_bmp.c +@@ -47,6 +47,8 @@ static int bmp_read_4bit(gdImagePtr im, gdIOCtxPtr infile, bmp_info_t *info, bmp + static int bmp_read_8bit(gdImagePtr im, gdIOCtxPtr infile, bmp_info_t *info, bmp_hdr_t *header); + static int bmp_read_rle(gdImagePtr im, gdIOCtxPtr infile, bmp_info_t *info); + ++static int _gdImageBmpCtx(gdImagePtr im, gdIOCtxPtr out, int compression); ++ + #define BMP_DEBUG(s) + + static int gdBMPPutWord(gdIOCtx *out, int w) +@@ -87,8 +89,10 @@ BGD_DECLARE(void *) gdImageBmpPtr(gdImagePtr im, int *size, int compression) + void *rv; + gdIOCtx *out = gdNewDynamicCtx(2048, NULL); + if (out == NULL) return NULL; +- gdImageBmpCtx(im, out, compression); +- rv = gdDPExtractData(out, size); ++ if (!_gdImageBmpCtx(im, out, compression)) ++ rv = gdDPExtractData(out, size); ++ else ++ rv = NULL; + out->gd_free(out); + return rv; + } +@@ -141,6 +145,11 @@ BGD_DECLARE(void) gdImageBmp(gdImagePtr im, FILE *outFile, int compression) + compression - whether to apply RLE or not. + */ + BGD_DECLARE(void) gdImageBmpCtx(gdImagePtr im, gdIOCtxPtr out, int compression) ++{ ++ _gdImageBmpCtx(im, out, compression); ++} ++ ++static int _gdImageBmpCtx(gdImagePtr im, gdIOCtxPtr out, int compression) + { + int bitmap_size = 0, info_size, total_size, padding; + int i, row, xpos, pixel; +@@ -148,6 +157,7 @@ BGD_DECLARE(void) gdImageBmpCtx(gdImagePtr im, gdIOCtxPtr out, int compression) + unsigned char *uncompressed_row = NULL, *uncompressed_row_start = NULL; + FILE *tmpfile_for_compression = NULL; + gdIOCtxPtr out_original = NULL; ++ int ret = 1; + + /* No compression if its true colour or we don't support seek */ + if (im->trueColor) { +@@ -325,6 +335,7 @@ BGD_DECLARE(void) gdImageBmpCtx(gdImagePtr im, gdIOCtxPtr out, int compression) + out_original = NULL; + } + ++ ret = 0; + cleanup: + if (tmpfile_for_compression) { + #ifdef _WIN32 +@@ -338,7 +349,7 @@ BGD_DECLARE(void) gdImageBmpCtx(gdImagePtr im, gdIOCtxPtr out, int compression) + if (out_original) { + out_original->gd_free(out_original); + } +- return; ++ return ret; + } + + static int compress_row(unsigned char *row, int length) |