From d81b82c70bc1fb9991bb95f1201abb5dea55f57f Mon Sep 17 00:00:00 2001 From: Chris Liddell Date: Mon, 17 Jul 2023 14:06:37 +0100 Subject: [PATCH] Bug 706897: Copy pcx buffer overrun fix from devices/gdevpcx.c Bounds check the buffer, before dereferencing the pointer. Upstream-Status: Backport [https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=d81b82c70bc1fb9991bb95f1201abb5dea55f57f] CVE: CVE-2023-38559 Signed-off-by: Vijay Anusuri --- base/gdevdevn.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/base/gdevdevn.c b/base/gdevdevn.c index 3b019d6..2888776 100644 --- a/base/gdevdevn.c +++ b/base/gdevdevn.c @@ -1980,7 +1980,7 @@ devn_pcx_write_rle(const byte * from, const byte * end, int step, gp_file * file byte data = *from; from += step; - if (data != *from || from == end) { + if (from >= end || data != *from) { if (data >= 0xc0) gp_fputc(0xc1, file); } else { -- 2.25.1