redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

crypto: algif_skcipher - Cap recv SG list at ctx->used 

commit 7cf8195470 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: 2d97591ef4 ("crypto: af_alg - consolidation of...")
Cc: <stable@vger.kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Herbert Xu 2020-05-29 14:54:43 +10:00 committed by Greg Kroah-Hartman
parent 972f961c59
commit 993e0d12f2
1 changed files with 1 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
crypto/algif_skcipher.c
View File

@ -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.