diff options
| author |   Jakub Kicinski <jakub.kicinski@netronome.com> | 2019-04-19 16:52:19 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-04-20 20:36:51 -0700 |
| commit | 12c7686111326148b4b5db189130522a4ad1be4a (patch) | |
| tree | e7eb8437b2d9d6f8b592019a768c27815e697cfd /net/tls/tls_sw.c | |
| parent | net/tls: avoid potential deadlock in tls_set_device_offload_rx() (diff) | |
| download | linux-dev-12c7686111326148b4b5db189130522a4ad1be4a.tar.xz linux-dev-12c7686111326148b4b5db189130522a4ad1be4a.zip | |
net/tls: don't leak IV and record seq when offload fails
When device refuses the offload in tls_set_device_offload_rx()
it calls tls_sw_free_resources_rx() to clean up software context
state.
Unfortunately, tls_sw_free_resources_rx() does not free all
the state tls_set_sw_offload() allocated - it leaks IV and
sequence number buffers. All other code paths which lead to
tls_sw_release_resources_rx() (which tls_sw_free_resources_rx()
calls) free those right before the call.
Avoid the leak by moving freeing of iv and rec_seq into
tls_sw_release_resources_rx().
Fixes: 4799ac81e52a ("tls: Add rx inline crypto offload")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tls/tls_sw.c')
| -rw-r--r-- | net/tls/tls_sw.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c index b50ced862f6f..29d6af43dd24 100644 --- a/net/tls/tls_sw.c +++ b/net/tls/tls_sw.c @@ -2078,6 +2078,9 @@ void tls_sw_release_resources_rx(struct sock *sk) struct tls_context *tls_ctx = tls_get_ctx(sk); struct tls_sw_context_rx *ctx = tls_sw_ctx_rx(tls_ctx); + kfree(tls_ctx->rx.rec_seq); + kfree(tls_ctx->rx.iv); + if (ctx->aead_recv) { kfree_skb(ctx->recv_pkt); ctx->recv_pkt = NULL; |