forked from pool/mupdf
6c7559ad02
CVE-2017-5896 bsc#1023761 bsc#1024679 OBS-URL: https://build.opensuse.org/package/show/Publishing/mupdf?expand=0&rev=49
41 lines
1.6 KiB
Diff
41 lines
1.6 KiB
Diff
X-Git-Url: http://git.ghostscript.com/?p=mupdf.git;a=blobdiff_plain;f=source%2Ffitz%2Fpixmap.c;h=f1291dc29d49ead44c10785fd014a0d995e45a91;hp=a8317127da7af6d39eb86fe3ca02cb4106a9b262;hb=2c4e5867ee699b1081527bc6c6ea0e99a35a5c27;hpb=90fa6203ad032fe161d85a3e580941ce3d1216f0
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diff --git a/source/fitz/pixmap.c b/source/fitz/pixmap.c
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index a831712..f1291dc 100644
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--- a/source/fitz/pixmap.c
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+++ b/source/fitz/pixmap.c
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@@ -1104,6 +1104,7 @@ fz_subsample_pixmap_ARM(unsigned char *ptr, int w, int h, int f, int factor,
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"@STACK:r1,<9>,factor,n,fwd,back,back2,fwd2,divX,back4,fwd4,fwd3,divY,back5,divXY\n"
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"ldr r4, [r13,#4*22] @ r4 = divXY \n"
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"ldr r5, [r13,#4*11] @ for (nn = n; nn > 0; n--) { \n"
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+ "ldr r8, [r13,#4*17] @ r8 = back4 \n"
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"18: @ \n"
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"mov r14,#0 @ r14= v = 0 \n"
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"sub r5, r5, r1, LSL #8 @ for (xx = x; xx > 0; x--) { \n"
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@@ -1120,7 +1121,7 @@ fz_subsample_pixmap_ARM(unsigned char *ptr, int w, int h, int f, int factor,
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"mul r14,r4, r14 @ r14= v *= divX \n"
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"mov r14,r14,LSR #16 @ r14= v >>= 16 \n"
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"strb r14,[r9], #1 @ *d++ = r14 \n"
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- "sub r0, r0, r8 @ s -= back2 \n"
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+ "sub r0, r0, r8 @ s -= back4 \n"
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"subs r5, r5, #1 @ n-- \n"
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"bgt 18b @ } \n"
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"21: @ \n"
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@@ -1249,6 +1250,7 @@ fz_subsample_pixmap(fz_context *ctx, fz_pixmap *tile, int factor)
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x += f;
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if (x > 0)
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{
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+ int back4 = x * n - 1;
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div = x * y;
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for (nn = n; nn > 0; nn--)
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{
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@@ -1263,7 +1265,7 @@ fz_subsample_pixmap(fz_context *ctx, fz_pixmap *tile, int factor)
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s -= back5;
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}
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*d++ = v / div;
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- s -= back2;
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+ s -= back4;
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}
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}
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}
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