github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-11-07 06:17:02 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

crypto: hisilicon/hpre - fix ECDH destination DMA mapping

Browse Source 
hpre_ecdh_dst_data_init() rejects valid requests whose output length
does not equal ctx->key_sz << 1, and maps the user buffer using the
user-provided len instead of the hardware transfer size. Drop the
redundant length check and use ctx->key_sz << 1 for dma_map_single()
so the whole hardware output is mapped.

Fixes: 05e7b906aa ("crypto: hisilicon/hpre - add 'ECDH' algorithm")
Cc: stable@vger.kernel.org
Signed-off-by: Weili Qian <qianweili@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Weili Qian 2026-09-18 20:27:23 +08:00 committed by Herbert Xu
parent 232804a5ed
commit 12d8edda8c
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/crypto/hisilicon/hpre/hpre_crypto.c
View File

@ -1510,13 +1510,13 @@ static int hpre_ecdh_dst_data_init(struct hpre_asym_request *hpre_req,
struct device *dev = ctx->dev;
dma_addr_t dma;
if (unlikely(!data || !sg_is_last(data) || len != ctx->key_sz << 1)) {
dev_err(dev, "data or data length is illegal!\n");
if (unlikely(!data || !sg_is_last(data))) {
dev_err(dev, "data is illegal!\n");
return -EINVAL;
}
hpre_req->dst = NULL;
dma = dma_map_single(dev, sg_virt(data), len, DMA_FROM_DEVICE);
dma = dma_map_single(dev, sg_virt(data), ctx->key_sz << 1, DMA_FROM_DEVICE);
if (unlikely(dma_mapping_error(dev, dma))) {
dev_err(dev, "dma map data err!\n");
return -ENOMEM;