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Sun, 2 Oct 2022 10:17:22 +0200 Received: by gauss2.secunet.de (Postfix, from userid 1000) id 1857E3182A08; Sun, 2 Oct 2022 10:17:22 +0200 (CEST) From: Steffen Klassert To: David Miller , Jakub Kicinski CC: Herbert Xu , Steffen Klassert , Subject: [PATCH 11/24] xfrm: add extack to verify_sec_ctx_len Date: Sun, 2 Oct 2022 10:16:59 +0200 Message-ID: <20221002081712.757515-12-steffen.klassert@secunet.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221002081712.757515-1-steffen.klassert@secunet.com> References: <20221002081712.757515-1-steffen.klassert@secunet.com> MIME-Version: 1.0 X-ClientProxiedBy: cas-essen-02.secunet.de (10.53.40.202) To mbx-essen-01.secunet.de (10.53.40.197) X-EXCLAIMER-MD-CONFIG: 2c86f778-e09b-4440-8b15-867914633a10 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Sabrina Dubroca Signed-off-by: Sabrina Dubroca Signed-off-by: Steffen Klassert --- net/xfrm/xfrm_user.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index 9fd30914f1ff..772a051feedb 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -102,7 +102,7 @@ static void verify_one_addr(struct nlattr **attrs, enum xfrm_attr_type_t type, *addrp = nla_data(rt); } -static inline int verify_sec_ctx_len(struct nlattr **attrs) +static inline int verify_sec_ctx_len(struct nlattr **attrs, struct netlink_ext_ack *extack) { struct nlattr *rt = attrs[XFRMA_SEC_CTX]; struct xfrm_user_sec_ctx *uctx; @@ -112,8 +112,10 @@ static inline int verify_sec_ctx_len(struct nlattr **attrs) uctx = nla_data(rt); if (uctx->len > nla_len(rt) || - uctx->len != (sizeof(struct xfrm_user_sec_ctx) + uctx->ctx_len)) + uctx->len != (sizeof(struct xfrm_user_sec_ctx) + uctx->ctx_len)) { + NL_SET_ERR_MSG(extack, "Invalid security context length"); return -EINVAL; + } return 0; } @@ -264,7 +266,7 @@ static int verify_newsa_info(struct xfrm_usersa_info *p, goto out; if ((err = verify_one_alg(attrs, XFRMA_ALG_COMP))) goto out; - if ((err = verify_sec_ctx_len(attrs))) + if ((err = verify_sec_ctx_len(attrs, NULL))) goto out; if ((err = verify_replay(p, attrs))) goto out; @@ -1800,7 +1802,7 @@ static int xfrm_add_policy(struct sk_buff *skb, struct nlmsghdr *nlh, err = verify_newpolicy_info(p, extack); if (err) return err; - err = verify_sec_ctx_len(attrs); + err = verify_sec_ctx_len(attrs, extack); if (err) return err; @@ -2136,7 +2138,7 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh, struct nlattr *rt = attrs[XFRMA_SEC_CTX]; struct xfrm_sec_ctx *ctx; - err = verify_sec_ctx_len(attrs); + err = verify_sec_ctx_len(attrs, extack); if (err) return err; @@ -2441,7 +2443,7 @@ static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh, struct nlattr *rt = attrs[XFRMA_SEC_CTX]; struct xfrm_sec_ctx *ctx; - err = verify_sec_ctx_len(attrs); + err = verify_sec_ctx_len(attrs, extack); if (err) return err; @@ -2533,7 +2535,7 @@ static int xfrm_add_acquire(struct sk_buff *skb, struct nlmsghdr *nlh, err = verify_newpolicy_info(&ua->policy, extack); if (err) goto free_state; - err = verify_sec_ctx_len(attrs); + err = verify_sec_ctx_len(attrs, extack); if (err) goto free_state;