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CIPSO: Fix unaligned memory access in cipso_v4_gentag_hdr 

We need to use put_unaligned when writing 32-bit DOI value
in cipso_v4_gentag_hdr to avoid unaligned memory access.

v2: unneeded type cast removed as Ondrej Mosnacek suggested.

Signed-off-by: Sergey Nazarov <s-nazarov@yandex.ru>
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sergey Nazarov 2021-03-05 11:05:54 +03:00 committed by David S. Miller
parent 8eb37ab7cc
commit e233febda6
1 changed files with 1 additions and 1 deletions
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2
net/ipv4/cipso_ipv4.c
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@ -1153,7 +1153,7 @@ 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, &buf[2]);
}
/**