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net: af_key: check encryption module availability consistency

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[ Upstream commit 015c44d7bf ]

Since the recent introduction supporting the SM3 and SM4 hash algos for IPsec, the kernel
produces invalid pfkey acquire messages, when these encryption modules are disabled. This
happens because the availability of the algos wasn't checked in all necessary functions.
This patch adds these checks.

Signed-off-by: Thomas Bartschies <thomas.bartschies@cvk.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Thomas Bartschies 2022-05-18 08:32:18 +02:00 • committed by Greg Kroah-Hartman
commit ac8d5eb26c
1 changed files with 3 additions and 3 deletions
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6
net/key/af_key.c
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@ -2904,7 +2904,7 @@ static int count_ah_combs(const struct xfrm_tmpl *t)
break;
if (!aalg->pfkey_supported)
continue;
if (aalg_tmpl_set(t, aalg))
if (aalg_tmpl_set(t, aalg) && aalg->available)
sz += sizeof(struct sadb_comb);
}
return sz + sizeof(struct sadb_prop);
@ -2922,7 +2922,7 @@ static int count_esp_combs(const struct xfrm_tmpl *t)
if (!ealg->pfkey_supported)
continue;
if (!(ealg_tmpl_set(t, ealg)))
if (!(ealg_tmpl_set(t, ealg) && ealg->available))
continue;
for (k = 1; ; k++) {
@ -2933,7 +2933,7 @@ static int count_esp_combs(const struct xfrm_tmpl *t)
if (!aalg->pfkey_supported)
continue;
if (aalg_tmpl_set(t, aalg))
if (aalg_tmpl_set(t, aalg) && aalg->available)
sz += sizeof(struct sadb_comb);
}
}