This is a note to let you know that I've just added the patch titled
crypto: caam - fix memory corruption in ahash_final_ctx
to the 3.10-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-caam-fix-memory-corruption-in-ahash_final_ctx.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b310c178e6d897f82abb9da3af1cd7c02b09f592 Mon Sep 17 00:00:00 2001
From: Horia Geant? <horia.geanta@xxxxxxxxxxxxx>
Date: Tue, 11 Aug 2015 20:19:20 +0300
Subject: crypto: caam - fix memory corruption in ahash_final_ctx
From: Horia Geant? <horia.geanta@xxxxxxxxxxxxx>
commit b310c178e6d897f82abb9da3af1cd7c02b09f592 upstream.
When doing pointer operation for accessing the HW S/G table,
a value representing number of entries (and not number of bytes)
must be used.
Fixes: 045e36780f115 ("crypto: caam - ahash hmac support")
Signed-off-by: Horia Geant? <horia.geanta@xxxxxxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/crypto/caam/caamhash.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/drivers/crypto/caam/caamhash.c
+++ b/drivers/crypto/caam/caamhash.c
@@ -895,13 +895,14 @@ static int ahash_final_ctx(struct ahash_
state->buflen_1;
u32 *sh_desc = ctx->sh_desc_fin, *desc;
dma_addr_t ptr = ctx->sh_desc_fin_dma;
- int sec4_sg_bytes;
+ int sec4_sg_bytes, sec4_sg_src_index;
int digestsize = crypto_ahash_digestsize(ahash);
struct ahash_edesc *edesc;
int ret = 0;
int sh_len;
- sec4_sg_bytes = (1 + (buflen ? 1 : 0)) * sizeof(struct sec4_sg_entry);
+ sec4_sg_src_index = 1 + (buflen ? 1 : 0);
+ sec4_sg_bytes = sec4_sg_src_index * sizeof(struct sec4_sg_entry);
/* allocate space for base edesc and hw desc commands, link tables */
edesc = kmalloc(sizeof(struct ahash_edesc) + DESC_JOB_IO_LEN +
@@ -928,7 +929,7 @@ static int ahash_final_ctx(struct ahash_
state->buf_dma = try_buf_map_to_sec4_sg(jrdev, edesc->sec4_sg + 1,
buf, state->buf_dma, buflen,
last_buflen);
- (edesc->sec4_sg + sec4_sg_bytes - 1)->len |= SEC4_SG_LEN_FIN;
+ (edesc->sec4_sg + sec4_sg_src_index - 1)->len |= SEC4_SG_LEN_FIN;
append_seq_in_ptr(desc, edesc->sec4_sg_dma, ctx->ctx_len + buflen,
LDST_SGF);
Patches currently in stable-queue which might be from horia.geanta@xxxxxxxxxxxxx are
queue-3.10/crypto-caam-fix-memory-corruption-in-ahash_final_ctx.patch
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