linux-kernel - [PATCH] crypto: stm32 - Handle failure of kmalloc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 22 Jun 2022 10:02:08 +0800
From:   Li Qiong <liqiong@...china.com>
To:     Herbert Xu <herbert@...dor.apana.org.au>,
        "David S . Miller" <davem@...emloft.net>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>
Cc:     linux-crypto@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        yuzhe@...china.com, renyu@...china.com,
        Li Qiong <liqiong@...china.com>
Subject: [PATCH] crypto: stm32 - Handle failure of kmalloc_array()

As the possible failure of the kmalloc_array(), therefore it
should be better to check it and return '-ENOMEM' on error.

Signed-off-by: Li Qiong <liqiong@...china.com>
---
 drivers/crypto/stm32/stm32-hash.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/crypto/stm32/stm32-hash.c b/drivers/crypto/stm32/stm32-hash.c
index d33006d43f76..fc03e32e364f 100644
--- a/drivers/crypto/stm32/stm32-hash.c
+++ b/drivers/crypto/stm32/stm32-hash.c
@@ -970,6 +970,8 @@ static int stm32_hash_export(struct ahash_request *req, void *out)
 	rctx->hw_context = kmalloc_array(3 + HASH_CSR_REGISTER_NUMBER,
 					 sizeof(u32),
 					 GFP_KERNEL);
+	if (!rctx->hw_context)
+		return -ENOMEM;
 
 	preg = rctx->hw_context;
 
-- 
2.11.0