From: Chris Liddell Date: Mon, 17 Jul 2023 14:06:37 +0100 Subject: Bug 706897: Copy pcx buffer overrun fix from devices/gdevpcx.c Origin: https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=d81b82c70bc1fb9991bb95f1201abb5dea55f57f Bug-Debian: https://bugs.debian.org/1043033 Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2023-38559 Bounds check the buffer, before dereferencing the pointer. --- base/gdevdevn.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/base/gdevdevn.c b/base/gdevdevn.c index 7b14d9c712b4..6351fb77ac75 100644 --- a/base/gdevdevn.c +++ b/base/gdevdevn.c @@ -1983,7 +1983,7 @@ 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 { -- 2.40.1