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Limit sscanf params with size

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Make sure parsed string fits given char buffer.
This commit is contained in:
Zdenek Kabelac 2012-02-23 22:50:50 +00:00
parent e3a47a9370
commit 75ac0b638c
2 changed files with 3 additions and 2 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.02.94 -
====================================
Limit sscanf parameters with buffer size in clvmd get_initial_state().
Use const lv pointer for lv_is_active...() functions.
Use same signed numbers in _mirrored_transient_status().
Integrate client-side lvmetad into build.

4
daemons/clvmd/lvm-functions.c
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@ -1,6 +1,6 @@
/*
* Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved.
* Copyright (C) 2004-2012 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
@ -729,7 +729,7 @@ static int get_initial_state(struct dm_hash_table *excl_uuid)
}
while (fgets(line, sizeof(line), lvs)) {
if (sscanf(line, "%s %s %s %s\n", vg, lv, flags, vg_flags) == 4) {
if (sscanf(line, "%64s %64s %25s %25s\n", vg, lv, flags, vg_flags) == 4) {
/* States: s:suspended a:active S:dropped snapshot I:invalid snapshot */
if (strlen(vg) == 38 && /* is is a valid UUID ? */