This is a note to let you know that I've just added the patch titled
crypto: rsa-pkcs1pad - fix dst len
to the 4.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
crypto-rsa-pkcs1pad-fix-dst-len.patch
and it can be found in the queue-4.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 6f0904ada402a45b3a0a3b9b6507d91d3a9da67a Mon Sep 17 00:00:00 2001
From: Tadeusz Struk <tadeusz.struk@xxxxxxxxx>
Date: Wed, 6 Apr 2016 14:42:32 -0700
Subject: crypto: rsa-pkcs1pad - fix dst len
From: Tadeusz Struk <tadeusz.struk@xxxxxxxxx>
commit 6f0904ada402a45b3a0a3b9b6507d91d3a9da67a upstream.
The output buffer length has to be at least as big as the key_size.
It is then updated to the actual output size by the implementation.
Signed-off-by: Tadeusz Struk <tadeusz.struk@xxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
crypto/rsa-pkcs1pad.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
--- a/crypto/rsa-pkcs1pad.c
+++ b/crypto/rsa-pkcs1pad.c
@@ -310,16 +310,16 @@ static int pkcs1pad_decrypt(struct akcip
req_ctx->child_req.src = req->src;
req_ctx->child_req.src_len = req->src_len;
req_ctx->child_req.dst = req_ctx->out_sg;
- req_ctx->child_req.dst_len = ctx->key_size - 1;
+ req_ctx->child_req.dst_len = ctx->key_size ;
- req_ctx->out_buf = kmalloc(ctx->key_size - 1,
+ req_ctx->out_buf = kmalloc(ctx->key_size,
(req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
GFP_KERNEL : GFP_ATOMIC);
if (!req_ctx->out_buf)
return -ENOMEM;
pkcs1pad_sg_set_buf(req_ctx->out_sg, req_ctx->out_buf,
- ctx->key_size - 1, NULL);
+ ctx->key_size, NULL);
akcipher_request_set_tfm(&req_ctx->child_req, ctx->child);
akcipher_request_set_callback(&req_ctx->child_req, req->base.flags,
@@ -491,16 +491,16 @@ static int pkcs1pad_verify(struct akciph
req_ctx->child_req.src = req->src;
req_ctx->child_req.src_len = req->src_len;
req_ctx->child_req.dst = req_ctx->out_sg;
- req_ctx->child_req.dst_len = ctx->key_size - 1;
+ req_ctx->child_req.dst_len = ctx->key_size;
- req_ctx->out_buf = kmalloc(ctx->key_size - 1,
+ req_ctx->out_buf = kmalloc(ctx->key_size,
(req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
GFP_KERNEL : GFP_ATOMIC);
if (!req_ctx->out_buf)
return -ENOMEM;
pkcs1pad_sg_set_buf(req_ctx->out_sg, req_ctx->out_buf,
- ctx->key_size - 1, NULL);
+ ctx->key_size, NULL);
akcipher_request_set_tfm(&req_ctx->child_req, ctx->child);
akcipher_request_set_callback(&req_ctx->child_req, req->base.flags,
Patches currently in stable-queue which might be from tadeusz.struk@xxxxxxxxx are
queue-4.5/crypto-rsa-pkcs1pad-fix-dst-len.patch
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