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Description: gd2: handle corrupt images better (CVE-2016-3074)
Origin: backport, https://github.com/libgd/libgd/commit/2bb97f407c1145c850416a3bfbcc8cf124e68a19
Bug-Debian: https://bugs.debian.org/822242
Forwarded: not-needed
Author: Mike Frysinger <vapier@gentoo.org>
Reviewed-by: Salvatore Bonaccorso <carnil@debian.org>
Last-Update: 2016-04-23
---
--- a/gd_gd2.c
+++ b/gd_gd2.c
@@ -178,12 +178,14 @@ _gd2GetHeader (gdIOCtxPtr in, int *sx, i
{
if (gdGetInt (&cidx[i].offset, in) != 1)
{
- goto fail1;
+ goto fail2;
};
if (gdGetInt (&cidx[i].size, in) != 1)
{
- goto fail1;
+ goto fail2;
};
+ if (cidx[i].offset < 0 || cidx[i].size < 0)
+ goto fail2;
};
*chunkIdx = cidx;
};
@@ -192,6 +194,8 @@ _gd2GetHeader (gdIOCtxPtr in, int *sx, i
return 1;
+fail2:
+ gdFree(cidx);
fail1:
return 0;
}
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