From: Tobias Geerinckx-Rice <me@tobias.gr>
Date: Thu, 28 Feb 2019 20:29:00 +0100
Subject: [PATCH] netpbm: Fix CVE-2017-2587.

Copied verbatim from Debian[0].

[0]: https://sources.debian.org/data/main/n/netpbm-free/2:10.78.05-0.1/debian/patches/netpbm-CVE-2017-2587.patch

---
diff -urNp old/converter/other/svgtopam.c new/converter/other/svgtopam.c
--- old/converter/other/svgtopam.c	2017-02-08 12:11:02.593690917 +0100
+++ new/converter/other/svgtopam.c	2017-02-08 13:49:38.319029371 +0100
@@ -771,12 +771,17 @@ createCanvas(unsigned int const width,
 
     MALLOCVAR_NOFAIL(canvasP);
 
-    canvasP->width  = width;
-    canvasP->height = height;
-    canvasP->pixels = ppm_allocarray(width, height);
-    canvasP->maxval = maxval;
+    if(canvasP != NULL){
+        canvasP->width  = width;
+        canvasP->height = height;
+        canvasP->pixels = ppm_allocarray(width, height);
+        canvasP->maxval = maxval;
+
+        *canvasPP = canvasP;
+    } else {
+       pm_error("can't allocate memory for canvas");
+    }
 
-    *canvasPP = canvasP;
 }
 
 
f='/guix/refs/?id=a698df72d37aa5173c357b7d1e3873d2c2c64c32'>refs</a><a class='active' href='/guix/log/COPYING'>log</a><a href='/guix/tree/COPYING?id=a698df72d37aa5173c357b7d1e3873d2c2c64c32'>tree</a><a href='/guix/commit/COPYING?id=a698df72d37aa5173c357b7d1e3873d2c2c64c32'>commit</a><a href='/guix/diff/COPYING?id=a698df72d37aa5173c357b7d1e3873d2c2c64c32'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/COPYING'>
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<option value='grep'>log msg</option>
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<div class='path'>path: <a href='/guix/log/?id=a698df72d37aa5173c357b7d1e3873d2c2c64c32'>root</a>/<a href='/guix/log/COPYING?id=a698df72d37aa5173c357b7d1e3873d2c2c64c32'>COPYING</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/COPYING?id=a698df72d37aa5173c357b7d1e3873d2c2c64c32&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>