From 0eb6df1d44eff8edba3e1337ddab90e43e27a960 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Fri, 29 May 2020 14:54:43 +1000 Subject: crypto: algif_skcipher - Cap recv SG list at ctx->used commit 4c636c1916324c5e8d13479b52f21f5152af2742 upstream. Somewhere along the line the cap on the SG list length for receive was lost. This patch restores it and removes the subsequent test which is now redundant. Fixes: c1b1fa586429 ("crypto: af_alg - consolidation of...") Cc: Signed-off-by: Herbert Xu Reviewed-by: Stephan Mueller Signed-off-by: Herbert Xu Signed-off-by: Greg Kroah-Hartman --- crypto/algif_skcipher.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c index e2c8ab40..4c3bdffe 100644 --- a/crypto/algif_skcipher.c +++ b/crypto/algif_skcipher.c @@ -74,14 +74,10 @@ static int _skcipher_recvmsg(struct socket *sock, struct msghdr *msg, return PTR_ERR(areq); /* convert iovecs of output buffers into RX SGL */ - err = af_alg_get_rsgl(sk, msg, flags, areq, -1, &len); + err = af_alg_get_rsgl(sk, msg, flags, areq, ctx->used, &len); if (err) goto free; - /* Process only as much RX buffers for which we have TX data */ - if (len > ctx->used) - len = ctx->used; - /* * If more buffers are to be expected to be processed, process only * full block size buffers. -- cgit v1.2.3