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dsl_prop_known_index(): check for invalid prop 

Resolve UBSAN array-index-out-of-bounds error in zprop_desc_t.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: szubersk <szuberskidamian@gmail.com>
Closes #14142
Closes #14147
This commit is contained in:
Damian Szuberski 2022-11-09 04:16:01 +10:00 committed by Brian Behlendorf
parent 8c0684d326
commit 0f4ee295ba
2 changed files with 28 additions and 1 deletions
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26
module/zcommon/zfs_prop.c
View File

@ -722,6 +722,8 @@ zfs_prop_init(void)
boolean_t
zfs_prop_delegatable(zfs_prop_t prop)
{
ASSERT3S(prop, >=, 0);
ASSERT3S(prop, <, ZFS_NUM_PROPS);
zprop_desc_t *pd = &zfs_prop_table[prop];
/* The mlslabel property is never delegatable. */
@ -844,6 +846,8 @@ zfs_prop_valid_for_type(int prop, zfs_type_t types, boolean_t headcheck)
zprop_type_t
zfs_prop_get_type(zfs_prop_t prop)
{
ASSERT3S(prop, >=, 0);
ASSERT3S(prop, <, ZFS_NUM_PROPS);
return (zfs_prop_table[prop].pd_proptype);
}
@ -853,6 +857,8 @@ zfs_prop_get_type(zfs_prop_t prop)
boolean_t
zfs_prop_readonly(zfs_prop_t prop)
{
ASSERT3S(prop, >=, 0);
ASSERT3S(prop, <, ZFS_NUM_PROPS);
return (zfs_prop_table[prop].pd_attr == PROP_READONLY ||
zfs_prop_table[prop].pd_attr == PROP_ONETIME ||
zfs_prop_table[prop].pd_attr == PROP_ONETIME_DEFAULT);
@ -864,6 +870,8 @@ zfs_prop_readonly(zfs_prop_t prop)
boolean_t
zfs_prop_visible(zfs_prop_t prop)
{
ASSERT3S(prop, >=, 0);
ASSERT3S(prop, <, ZFS_NUM_PROPS);
return (zfs_prop_table[prop].pd_visible &&
zfs_prop_table[prop].pd_zfs_mod_supported);
}
@ -874,6 +882,8 @@ zfs_prop_visible(zfs_prop_t prop)
boolean_t
zfs_prop_setonce(zfs_prop_t prop)
{
ASSERT3S(prop, >=, 0);
ASSERT3S(prop, <, ZFS_NUM_PROPS);
return (zfs_prop_table[prop].pd_attr == PROP_ONETIME ||
zfs_prop_table[prop].pd_attr == PROP_ONETIME_DEFAULT);
}
@ -881,12 +891,16 @@ zfs_prop_setonce(zfs_prop_t prop)
const char *
zfs_prop_default_string(zfs_prop_t prop)
{
ASSERT3S(prop, >=, 0);
ASSERT3S(prop, <, ZFS_NUM_PROPS);
return (zfs_prop_table[prop].pd_strdefault);
}
uint64_t
zfs_prop_default_numeric(zfs_prop_t prop)
{
ASSERT3S(prop, >=, 0);
ASSERT3S(prop, <, ZFS_NUM_PROPS);
return (zfs_prop_table[prop].pd_numdefault);
}
@ -897,6 +911,8 @@ zfs_prop_default_numeric(zfs_prop_t prop)
const char *
zfs_prop_to_name(zfs_prop_t prop)
{
ASSERT3S(prop, >=, 0);
ASSERT3S(prop, <, ZFS_NUM_PROPS);
return (zfs_prop_table[prop].pd_name);
}
@ -906,6 +922,8 @@ zfs_prop_to_name(zfs_prop_t prop)
boolean_t
zfs_prop_inheritable(zfs_prop_t prop)
{
ASSERT3S(prop, >=, 0);
ASSERT3S(prop, <, ZFS_NUM_PROPS);
return (zfs_prop_table[prop].pd_attr == PROP_INHERIT ||
zfs_prop_table[prop].pd_attr == PROP_ONETIME);
}
@ -958,6 +976,8 @@ zfs_prop_valid_keylocation(const char *str, boolean_t encrypted)
const char *
zfs_prop_values(zfs_prop_t prop)
{
ASSERT3S(prop, >=, 0);
ASSERT3S(prop, <, ZFS_NUM_PROPS);
return (zfs_prop_table[prop].pd_values);
}
@ -969,6 +989,8 @@ zfs_prop_values(zfs_prop_t prop)
int
zfs_prop_is_string(zfs_prop_t prop)
{
ASSERT3S(prop, >=, 0);
ASSERT3S(prop, <, ZFS_NUM_PROPS);
return (zfs_prop_table[prop].pd_proptype == PROP_TYPE_STRING ||
zfs_prop_table[prop].pd_proptype == PROP_TYPE_INDEX);
}
@ -980,6 +1002,8 @@ zfs_prop_is_string(zfs_prop_t prop)
const char *
zfs_prop_column_name(zfs_prop_t prop)
{
ASSERT3S(prop, >=, 0);
ASSERT3S(prop, <, ZFS_NUM_PROPS);
return (zfs_prop_table[prop].pd_colname);
}
@ -990,6 +1014,8 @@ zfs_prop_column_name(zfs_prop_t prop)
boolean_t
zfs_prop_align_right(zfs_prop_t prop)
{
ASSERT3S(prop, >=, 0);
ASSERT3S(prop, <, ZFS_NUM_PROPS);
return (zfs_prop_table[prop].pd_rightalign);
}

3
module/zfs/dsl_prop.c
View File

@ -75,7 +75,8 @@ static int
dsl_prop_known_index(zfs_prop_t prop, uint64_t value)
{
const char *str = NULL;
if (zfs_prop_get_type(prop) == PROP_TYPE_INDEX)
if (prop != ZPROP_CONT && prop != ZPROP_INVAL &&
zfs_prop_get_type(prop) == PROP_TYPE_INDEX)
return (!zfs_prop_index_to_string(prop, value, &str));
return (-1);