30 lines
978 B
Diff
30 lines
978 B
Diff
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From 2c8c83b9731ff822fad6cc8c670ea5519c366a14 Mon Sep 17 00:00:00 2001
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From: Joerg Sonnenberger <joerg@bec.de>
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Date: Thu, 19 Jul 2018 21:14:53 +0200
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Subject: [PATCH] Reject LHA archive entries with negative size.
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---
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libarchive/archive_read_support_format_lha.c | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/libarchive/archive_read_support_format_lha.c b/libarchive/archive_read_support_format_lha.c
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index b8ef4ae1..95c99bb1 100644
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--- a/libarchive/archive_read_support_format_lha.c
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+++ b/libarchive/archive_read_support_format_lha.c
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@@ -701,6 +701,12 @@ archive_read_format_lha_read_header(struct archive_read *a,
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* Prepare variables used to read a file content.
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*/
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lha->entry_bytes_remaining = lha->compsize;
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+ if (lha->entry_bytes_remaining < 0) {
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+ archive_set_error(&a->archive,
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+ ARCHIVE_ERRNO_FILE_FORMAT,
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+ "Invalid LHa entry size");
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+ return (ARCHIVE_FATAL);
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+ }
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lha->entry_offset = 0;
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lha->entry_crc_calculated = 0;
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--
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2.20.1
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