mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-05 16:37:50 +00:00
Code Issues Releases Wiki Activity

crypto: qce - Fix SHA result buffer corruption issues

Browse source 
Partial hash was being copied into the final result buffer without the
entire message block processed. Depending on how the end user processes
this result buffer, errors vary from result buffer corruption to result
buffer poisoing. Fix this issue by ensuring that only the final hash value
is copied into the result buffer.

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Thara Gopinath 2020-11-19 10:52:31 -05:00 committed by Herbert Xu
parent 8cbc344821
commit 1148a9654b
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/crypto/qce/sha.c
View file

@ -48,7 +48,7 @@ static void qce_ahash_done(void *data)
dma_unmap_sg(qce->dev, &rctx->result_sg, 1, DMA_FROM_DEVICE);
memcpy(rctx->digest, result->auth_iv, digestsize);
if (req->result)
if (req->result && rctx->last_blk)
memcpy(req->result, result->auth_iv, digestsize);
rctx->byte_count[0] = cpu_to_be32(result->auth_byte_count[0]);