30 lines
911 B
Diff
30 lines
911 B
Diff
From 54f24ec5486bdacde9419466a2c27defaddf508e Mon Sep 17 00:00:00 2001
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From: Lubos Kardos <lkardos@redhat.com>
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Date: Mon, 21 Sep 2015 11:02:45 +0200
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Subject: [PATCH] Fix reading a memory right after the end of an allocated
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area.
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The problem evinced itself when somebody tried to use the macro
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expansion on the string "%!". The problem was revealed by compiling
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with "--fsanitize=memory" (rhbz:#1260248).
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---
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rpmio/macro.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/rpmio/macro.c b/rpmio/macro.c
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index 46e6b87..4b3c41b 100644
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--- a/rpmio/macro.c
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+++ b/rpmio/macro.c
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@@ -993,7 +993,7 @@ expandMacro(MacroBuf mb, const char *src, size_t slen)
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chkexist = 0;
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switch ((c = *s)) {
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default: /* %name substitution */
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- while (strchr("!?", *s) != NULL) {
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+ while (*s != '\0' && strchr("!?", *s) != NULL) {
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switch(*s++) {
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case '!':
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negate = ((negate + 1) % 2);
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--
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1.9.3
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