From 67b53a660e6bf0da2fa8d8872e897a14d8059eaf Mon Sep 17 00:00:00 2001 From: Wenkai Lin Date: Sat, 21 Mar 2026 15:00:38 +0800 Subject: [PATCH] crypto: hisilicon/sec2 - prevent req used-after-free for sec During packet transmission, if the system is under heavy load, the hardware might complete processing the packet and free the request memory (req) before the transmission function finishes. If the software subsequently accesses this req, a use-after-free error will occur. The qp_ctx memory exists throughout the packet sending process, so replace the req with the qp_ctx. Fixes: f0ae287c5045 ("crypto: hisilicon/sec2 - implement full backlog mode for sec") Signed-off-by: Wenkai Lin Signed-off-by: Chenghai Huang Signed-off-by: Herbert Xu --- drivers/crypto/hisilicon/sec2/sec_crypto.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/crypto/hisilicon/sec2/sec_crypto.c b/drivers/crypto/hisilicon/sec2/sec_crypto.c index 15174216d8c41..2471a4dd0b508 100644 --- a/drivers/crypto/hisilicon/sec2/sec_crypto.c +++ b/drivers/crypto/hisilicon/sec2/sec_crypto.c @@ -230,7 +230,7 @@ static int qp_send_message(struct sec_req *req) spin_unlock_bh(&qp_ctx->req_lock); - atomic64_inc(&req->ctx->sec->debug.dfx.send_cnt); + atomic64_inc(&qp_ctx->ctx->sec->debug.dfx.send_cnt); return -EINPROGRESS; } -- 2.47.3