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df23eb8615
CVE-2023-36193 is fixed in 1.94. CVE-2023-46009 fixed by patch from upstream repo (not released yet). Bug: https://bugs.gentoo.org/918436 Signed-off-by: Hanno Böck <hanno@gentoo.org>
94 lines
3.1 KiB
Diff
94 lines
3.1 KiB
Diff
diff -Naurp a/src/giffunc.c b/src/giffunc.c
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--- a/src/giffunc.c 2021-09-20 13:19:00.000000000 +0200
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+++ b/src/giffunc.c 2024-02-04 14:05:47.811880522 +0100
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@@ -466,8 +466,10 @@ Gif_CopyImage(Gif_Image *src)
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void Gif_MakeImageEmpty(Gif_Image* gfi) {
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Gif_ReleaseUncompressedImage(gfi);
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Gif_ReleaseCompressedImage(gfi);
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- gfi->left = gfi->top = 0;
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- gfi->width = gfi->height = 1;
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+ gfi->left = gfi->left < 0xFFFE ? gfi->left : 0xFFFE;
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+ gfi->top = gfi->top < 0xFFFE ? gfi->top : 0xFFFE;
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+ gfi->width = 1;
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+ gfi->height = 1;
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gfi->transparent = 0;
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Gif_CreateUncompressedImage(gfi, 0);
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gfi->img[0][0] = 0;
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diff -Naurp a/src/support.c b/src/support.c
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--- a/src/support.c 2023-06-14 17:47:12.000000000 +0200
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+++ b/src/support.c 2024-02-04 14:05:51.307885109 +0100
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@@ -1421,9 +1421,9 @@ analyze_crop(int nmerger, Gt_Crop* crop,
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}
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}
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- if (t > b)
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+ if (t > b) {
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crop->w = crop->h = 0;
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- else {
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+ } else {
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crop->x = l;
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crop->y = t;
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crop->w = r - l;
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@@ -1618,7 +1618,8 @@ merge_frame_interval(Gt_Frameset *fset,
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desti->comment = 0;
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}
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if (fr->comment) {
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- if (!desti->comment) desti->comment = Gif_NewComment();
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+ if (!desti->comment)
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+ desti->comment = Gif_NewComment();
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merge_comments(desti->comment, fr->comment);
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/* delete the comment early to help with memory; set field to 0 so we
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don't re-free it later */
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@@ -1628,10 +1629,22 @@ merge_frame_interval(Gt_Frameset *fset,
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if (fr->interlacing >= 0)
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desti->interlace = fr->interlacing;
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- if (fr->left >= 0)
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- desti->left = fr->left + (fr->position_is_offset ? desti->left : 0);
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- if (fr->top >= 0)
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- desti->top = fr->top + (fr->position_is_offset ? desti->top : 0);
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+ if (fr->left >= 0) {
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+ int left = fr->left + (fr->position_is_offset ? desti->left : 0);
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+ if (left + desti->width > 65535) {
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+ error(1, "left position %d out of range", left);
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+ return 0;
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+ }
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+ desti->left = left;
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+ }
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+ if (fr->top >= 0) {
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+ int top = fr->top + (fr->position_is_offset ? desti->top : 0);
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+ if (top + desti->height > 65535) {
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+ error(1, "top position %d out of range", top);
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+ return 0;
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+ }
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+ desti->top = top;
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+ }
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if (fr->delay >= 0)
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desti->delay = fr->delay;
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diff -Naurp a/src/xform.c b/src/xform.c
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--- a/src/xform.c 2023-06-14 17:48:05.000000000 +0200
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+++ b/src/xform.c 2024-02-04 14:05:47.812880524 +0100
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@@ -262,18 +262,18 @@ crop_image(Gif_Image* gfi, Gt_Frame* fr,
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gfi->img[j] = old_img[c.y + j] + c.x;
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gfi->img[c.h] = 0;
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Gif_DeleteArray(old_img);
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+ gfi->left += c.x - fr->left_offset;
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+ gfi->top += c.y - fr->top_offset;
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gfi->width = c.w;
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gfi->height = c.h;
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- } else if (preserve_total_crop)
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+ } else if (preserve_total_crop) {
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Gif_MakeImageEmpty(gfi);
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- else {
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+ } else {
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Gif_DeleteArray(gfi->img);
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gfi->img = 0;
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gfi->width = gfi->height = 0;
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}
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- gfi->left += c.x - fr->left_offset;
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- gfi->top += c.y - fr->top_offset;
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return gfi->img != 0;
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}
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