diff options
| author |   Benoît Ganne <bganne@cisco.com> | 2020-07-17 11:54:28 +0200 |
|---|---|---|
| committer |   Andrew Yourtchenko <ayourtch@gmail.com> | 2020-08-18 19:47:21 +0000 |
| commit | cafaac98e7424b649f34da78620a77ef0653c08b (patch) | |
| tree | 52a7a74f8d720d24eff9d454a70f30c4a9e19251 /src | |
| parent | 76797dc615b641362692337fbbaedd0f0cabb00e (diff) | |
feature: fix feature config data initialization overflow
Copy only exactly the data provided by the user even when it is not a
4-bytes multiple.
Type: fix
Change-Id: I2ef987c37e58523a38b46b09227529db2c26aa55
Signed-off-by: Benoît Ganne <bganne@cisco.com>
(cherry picked from commit c79a14f13a0db6f59123e0e6b0b71d4f24433b01)
Diffstat (limited to 'src')
| -rw-r--r-- | src/vnet/config.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/src/vnet/config.c b/src/vnet/config.c index 9beda4a5706..73fed66d13a 100644 --- a/src/vnet/config.c +++ b/src/vnet/config.c @@ -267,11 +267,16 @@ vnet_config_add_feature (vlib_main_t * vm, f->feature_index = feature_index; f->node_index = node_index; - n_feature_config_u32s = - round_pow2 (n_feature_config_bytes, - sizeof (f->feature_config[0])) / - sizeof (f->feature_config[0]); - vec_add (f->feature_config, feature_config, n_feature_config_u32s); + if (n_feature_config_bytes) + { + n_feature_config_u32s = + round_pow2 (n_feature_config_bytes, + sizeof (f->feature_config[0])) / + sizeof (f->feature_config[0]); + vec_validate (f->feature_config, n_feature_config_u32s - 1); + clib_memcpy_fast (f->feature_config, feature_config, + n_feature_config_bytes); + } /* Sort (prioritize) features. */ if (vec_len (new_features) > 1) |