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29 lines
887 B
Diff
29 lines
887 B
Diff
From 7d3c1bea895d910907e2501fe9165e353eceabae Mon Sep 17 00:00:00 2001
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From: Markus Kuhn <Markus.Kuhn@cl.cam.ac.uk>
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Date: Mon, 15 Feb 2021 18:27:47 +0000
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Subject: [PATCH 15/15] jbg_newlen(): check for end-of-file within
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MARKER_NEWLEN
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fixes https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=969593
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reported by Casper Sun
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---
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libjbig/jbig.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/libjbig/jbig.c b/libjbig/jbig.c
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index e9938e5..289b6d8 100644
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--- a/libjbig/jbig.c
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+++ b/libjbig/jbig.c
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@@ -3272,6 +3272,8 @@ int jbg_newlen(unsigned char *bie, size_t len)
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else if (p[0] == MARKER_ESC)
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switch (p[1]) {
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case MARKER_NEWLEN:
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+ if (p + 5 >= bie + len)
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+ return JBG_EAGAIN;
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y = (((long) bie[ 8] << 24) | ((long) bie[ 9] << 16) |
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((long) bie[10] << 8) | (long) bie[11]);
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yn = (((long) p[2] << 24) | ((long) p[3] << 16) |
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--
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2.45.0
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