From: Seergey Nazarov <s-nazarov@yandex.ru>
To: linux-security-module@vger.kernel.org
Cc: paul@paul-moore.com
Subject: [PATCH] CIPSO: Fix unaligned memory access in cipso_v4_gentag_hdr
Date: Fri, 05 Mar 2021 00:00:32 +0300 [thread overview]
Message-ID: <a93d1b4c1d027d037ec341eabfc8e7920e589a49.camel@yandex.ru> (raw)
We need to use put_unaligned when writing 32-bit DOI value
in cipso_v4_gentag_hdr to avoid unaligned memory access.
Signed-off-by: Sergey Nazarov <s-nazarov@yandex.ru>
---
net/ipv4/cipso_ipv4.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c
index 471d33a..28dfe40 100644
--- a/net/ipv4/cipso_ipv4.c
+++ b/net/ipv4/cipso_ipv4.c
@@ -1162,7 +1162,7 @@ static void cipso_v4_gentag_hdr(const struct
cipso_v4_doi *doi_def,
{
buf[0] = IPOPT_CIPSO;
buf[1] = CIPSO_V4_HDR_LEN + len;
- *(__be32 *)&buf[2] = htonl(doi_def->doi);
+ put_unaligned_be32(doi_def->doi, (__be32 *)&buf[2]);
}
/**
--
1.8.3.1
next reply other threads:[~2021-03-04 21:09 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-04 21:00 Seergey Nazarov [this message]
2021-03-04 21:17 ` [PATCH] CIPSO: Fix unaligned memory access in cipso_v4_gentag_hdr Ondrej Mosnacek
2021-03-04 21:45 ` Paul Moore
2021-03-05 7:40 ` Seergey Nazarov
2021-03-05 7:28 ` Seergey Nazarov
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