32 lines
986 B
Diff
32 lines
986 B
Diff
From 1d530107a24d71e798727d7f0afa0833473d1074 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Matej=20Mu=C5=BEila?= <mmuzila@gmail.com>
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Date: Wed, 11 Jan 2023 08:55:58 +0100
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Subject: [PATCH] Fix savannah bug #62387
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* src/list.c (from_header): Check for the end of field after leading byte
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(0x80 or 0xff) of base-256 encoded header value
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---
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src/list.c | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/src/list.c b/src/list.c
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index 9fafc425..bf41b581 100644
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--- a/src/list.c
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+++ b/src/list.c
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@@ -895,6 +895,12 @@ from_header (char const *where0, size_t digs, char const *type,
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<< (CHAR_BIT * sizeof (uintmax_t)
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- LG_256 - (LG_256 - 2)));
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value = (*where++ & ((1 << (LG_256 - 2)) - 1)) - signbit;
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+ if (where == lim)
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+ {
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+ if (type && !silent)
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+ ERROR ((0, 0, _("Archive base-256 value is invalid")));
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+ return -1;
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+ }
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for (;;)
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{
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value = (value << LG_256) + (unsigned char) *where++;
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--
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2.38.1
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