net: xfrm: Amend XFRMA_SEC_CTX nla_policy structure

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[ Upstream commit d1e0e61d61 ]

According to all consumers code of attrs[XFRMA_SEC_CTX], like

* verify_sec_ctx_len(), convert to xfrm_user_sec_ctx*
* xfrm_state_construct(), call security_xfrm_state_alloc whose prototype
is int security_xfrm_state_alloc(.., struct xfrm_user_sec_ctx *sec_ctx);
* copy_from_user_sec_ctx(), convert to xfrm_user_sec_ctx *
...

It seems that the expected parsing result for XFRMA_SEC_CTX should be
structure xfrm_user_sec_ctx, and the current xfrm_sec_ctx is confusing
and misleading (Luckily, they happen to have same size 8 bytes).

This commit amend the policy structure to xfrm_user_sec_ctx to avoid
ambiguity.

Fixes: cf5cb79f69 ("[XFRM] netlink: Establish an attribute policy")
Signed-off-by: Lin Ma <linma@zju.edu.cn>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Lin Ma 2023-06-30 16:19:11 +08:00 • committed by Greg Kroah-Hartman

parent 479884b4ce

commit 71dfe71df1

2 changed files with 2 additions and 2 deletions

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net/xfrm/xfrm_compat.c

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2

net/xfrm/xfrm_user.c

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