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crypto: hisilicon/sec2 - prevent req used-after-free for sec

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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: f0ae287c50 ("crypto: hisilicon/sec2 - implement full backlog mode for sec")
Signed-off-by: Wenkai Lin <linwenkai6@hisilicon.com>
Signed-off-by: Chenghai Huang <huangchenghai2@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Wenkai Lin
2026-03-21 15:00:38 +08:00
committed by Herbert Xu
parent 07fa25957a
commit 67b53a660e
1 changed files with 1 additions and 1 deletions
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drivers/crypto/hisilicon/sec2/sec_crypto.c
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@@ -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;
}