From patchwork Tue Mar 9 14:42:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Casey Schaufler X-Patchwork-Id: 12125699 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A3172C433E6 for ; Tue, 9 Mar 2021 15:04:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7468365253 for ; Tue, 9 Mar 2021 15:04:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231270AbhCIPEY (ORCPT ); Tue, 9 Mar 2021 10:04:24 -0500 Received: from sonic313-14.consmr.mail.ne1.yahoo.com ([66.163.185.37]:46282 "EHLO sonic313-14.consmr.mail.ne1.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231860AbhCIPEA (ORCPT ); Tue, 9 Mar 2021 10:04:00 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1615302239; bh=9wegpK8mcknK8Y5IEmc097UBLFU5IwOBWqh7JzNqZu0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From:Subject:Reply-To; b=qoJkwcQB7ZeMEJ8EBzrmUYQr9lDLm91ewDkxP14+JfVo2oI1ZqHEGCCWEcLT8LIgqcwYfzRqt/6xIU567swBq0yPUDo9C6ptDP1UKoZnrcGvMN6lwkFARO+nK5kI1DIKtRrTjCP2bD/ZSd7NlPCqUGUeiEcRARGN+eZC1xsjHA/9Jui1Tuzgdr0R7TgGgZUtnKfT+nm+4dWi/npUenUYv2usOQY09kOxcs+S/AkzLtZvAExttBZFUEroC9y76ZO9N0S8BTBTKNpPciCQE/pKZ/CMTbIirLl7Cv55IgHIcfBBtfilheY2xfkjk0q6Do/ZRZ7DVGTvP1sWPb5Hfc04+g== X-SONIC-DKIM-SIGN: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1615302239; bh=0B4ffJrTIEvbHdwZkcQ8VCmOwBXpbEUrmJ6Ltg4rzd5=; h=X-Sonic-MF:From:To:Subject:Date:From:Subject; b=Lid4IBEMy+zNAZC8/7YagoUsFOvmtw1a5t0wuCcWrtV7DiZVVyaKPlW0iBPgqRk2ian0N9zbhoSs7rH1F/gXdOAix42cFYcgUiWwa/2AUK6fXiXpvZ4y+rUb8uZBXnpBzArEyY5iH9K1D5t8P+MyOpF8rsrRWlhbmDqK+imzuRwWxONQT4H/vbW0y359HBr6H25OVEKnm821u5yTz5UQ6gDyUNfDdA596oRwL8GmoR6R7uq/BpMxAN/gQ8vZzKnr/XQdeaNRy+EtQOzErL/uxCmDg7G2J/R+Z+lZuhezyo1Q0g/JLn/Nb+wK2bhMaciwKLxY6ZTP3D5s0w7laBQwxw== X-YMail-OSG: nboaL0kVM1k1RwIHGVXVIryo1sU1ZXSJIYX3nZLRexEcDMcwtrCGm_KlDhAvjq1 6u9BECldpwsGeZaG6UX8LrnGXWukOumArGEyApIXfsLWLBWZyvafIkTSDK6ISG07vd2pGg__QbIf 7FaUKEcDLDY7rkE8JKfq4IGKUIdSekjoiigTJ29xg5bOW_0gT7efY45LY_0Ncc_i5f.NjInpnxPg a1Hab3STQjBvO5.MjG601zb8mOwL9.YJTR3QAH_ZoCXOFWmb5KCRoWNPcisTOzRggAQAqPf7WEpY qPPA2zX3fI8NyqBPVHQryGyywTK1dBo6sxxEdbRH.14jycY6KtPTd0TvEJslgLnh8m4_kgn.seOH vYh3th4Cep7M3VpZ4P9vOjeOfu7NzAHWONGQWA9sAtQnW3zkkSanzUV7S50RR6eaunVIuM.alOKu iScqr5YvePAAuvFMwSBM6bLwHcAJ1kJJ4QZgnouEz24NQ30v7QKjz3spXxc8X4rDFrPa8_6JComM nIOoKubTO8WEnM06_9bRtEs58q4PmskJ9iyJGeGavHtjS1P_DTAo.IQxrTMZy2C.x.2hN4WKOZSS WTcSVPMJbmhEszZmbuVp7LQGrnorCeaVLHqEbHrhTwpH2ODj2oLoLb83gbzhwmj4wsoD173U8o2D .z0C_NcqrSbQHlzOctQ2di6vwVBztdMKeogxoLJzyesDRkICg4r4pXD2az2HPI3s9VyGJXXlHf5c m7L642vOkWYeS1bcO8WJRvzkopWtFP1_DHe9jGC4DTWmmL6LcarK4mevEvwBoJHs1PJ.FtuOtVCB Wmi4RXYmUzICSLMzUXV59qUf9t7madKcv7gGEUp.Teon2NesezH2xPBFCklbwVY6lUaaJKFA9uvv fx9UgL6WHCQHa3h.mBOloss0nkDKbJu1tDmGndNTxfxsZX9EYy6dc5.kFoXryGPPz8KDTJwGrM_f RQx.ogn4VPp0nvBUYRWnJmI6poGyb_986zYDBHzM2iow5ypZHYBtBjOIIILIXBkCUID_.YDDrjf3 hDI_n9vVjenNhsfzMaqOCOv3BJjdFdW931MJrji5dXrdpry7nbiTviYDxmRGAqaJeLbTVJBj24sC rzAXI9m_AeZInWd5Q0ix1hPKKHDzY8uwuvrDA6nd1LBbi53l0rWZ90Omk6t.EFUgZpPYXyUQcDrO acsILcJjeMlgEY4I0HOd0XFndYbFfQLH4OgSOhGev4vNSTk_tVOveAU.Wk4fSRGuOqXkVAP41RUJ gtK2c_SA0CSr5NpupFP_m3v7YGHik8B8OrgV5XdUI6rOUynPCkNT4lm1gKC4GOYfkJrNcFi3Wk9_ m.4BUou4LzV5hRL8TcVXoKf4Q2bI7pR1vijqkfLnJe86hAQf3DPUr957yzLWPeREJy9tmy6Be5ic ISN5ZxdORRxshk93V1AVhC6RIs81zIGn62KZmJ.YulZUD8AebdB.AkH.vWx45BrvRJ5tfke2MiAH qttwUvkgk3JxcJr3XxdNvb66xfQ_VxIFe24Uv8PuR6AsCvCAHyjH4dkMQyk4aV_HnO7wCdOuXqjr gNqah7eH4Sw_p3kpbXka4PDEqfAh3hyIE6lVhFtbcEVQUv5hgwCRZ12peLvjBIRhOTeAtuQxNDh. HzyaW7dit2Yggwlx7A64jBHXBoU0aNqXEcgPwsWHBZFOn3XwqoXt3oasbfIRaeEaSvb8awARWFs1 D9JzOCB0myHzHLSSFo.Ezq1ovUu2UpMPK.phoBQVuApxS9Jt_3FZR9vfoZGAiJjlZG1_UZ6.jbUQ sQ3MQELDV8448jYxZXjuKJiy4XLLZManYZQiGU5RE8w3bXTgWa22P9mxpnHyaJSR0huyouhsdbeE xCEmEXuHvHcWFd9Kn5416888NGInAnm7R.Mp2bJTT_OA83Ji3UBvksB_alm2mDV394.D2HYNENz8 6Cg3qA_dB0B57.TlncjAMeMZeFdabMqddzF6PFufnhisl_ZpUqv3URgIy43isUTROw3UJZVPCggz y4bKNKx2NBspBGznjwtXqtBdzUkFIhOP65_G4.PGICa4maamZsuBRUDJMvzhmtu55kZN4vohr5qJ Wc7f8aXjUwE4TYatvwooEH.NdzKNB8.RQAOT0e1Ejjy9uGcZWOBzAk9X8eBqNQwmCemM3a0wUwNk priGJvGCsbRSijF1NlAHYZdL8m8IaemtWhN2ayfa.D8Ar9sy4Fu_0Ib5HvT5Hj3gfgx7K143e72B dkP_bvIZPVRGIj3mPcYX6t856u9_tRxPGTIk5opYFGcyKNXVlxcmD3ETx7bgn7mQG6aBmLvLtCyu 05P6YkgDjqAXzbNe2YBIoSvFEai17vzyPwaLAVR4gjUtFcTusHAgwlxk_amq742DfpiN1pXDSplI XZ05ctIfAFET6S561N6JZyf6CnNhFmKebozJpSRZsCoQDAGjc9X8y1gNECDj.NNv.CPZYqCUALoI xyMNCNduQoShMGIBI_GEnA_DQqUQgfdvbtMHFiIA1leE8V_k.GvmhXmt9rsKEaU9JT1iQtcBbcO8 9hbj6VZE1yY8DJdVQSKrjUs95pPnQuayz8TfV6TN81_J9r95a_oF9IAA6uOKHKyfKPLHBPYBJX1g lE_7EJrl.tIA.COhNUCLkW88sDo1WZZdEa_fNn_4iOwc9OWX2jncezYSsceBHSNUVoriS9AmMpZd njKeDWaZY2W6LsjxjzfPzzMKGRXzEDKAmgdPZwq15kLZiaVur5nrEQxlBsy3tSBkH59IY870Be2E PvUr1K0qu9XC4_Y0ylhMcY6Atk3.voDqU0g02_LcRugkCArcodphgoqFWGITRX5kdvqOBqtDHUiR xHJS3QXnuYBOhpYfe6vRL5lNDvZO5OQX8Ve9tvlAGSILVWvYWljDKlseBmPqtRko7u_gp6yc1jGy Ue4JHoP2HdyfYp.0Ez02GWK1Z5QLoSW2x8vG5nk3FomUCQ7IpriPNss2NYXgQoQAOhLN8uk91SCk BKfeMdsdtWYWMQAcC1ApQcQkVCicpzJceCFie9eyn1ImvoZYZNpEJTfbKevuuv4NSLahIZvA5wGe 2Bb8JXYFhCRMwZnqucs92kZrmj9FQCSh8OVfFp4StPSrLiWkDLGSGxuelK7Q1uMp.LxM.5TtsVZS tu3Ck6BF1YGHVNMqQPy5nBBS7D22_XUbiTih2Ka3FtA-- X-Sonic-MF: Received: from sonic.gate.mail.ne1.yahoo.com by sonic313.consmr.mail.ne1.yahoo.com with HTTP; Tue, 9 Mar 2021 15:03:59 +0000 Received: by smtp411.mail.bf1.yahoo.com (VZM Hermes SMTP Server) with ESMTPA ID 17705197e2b5b17aa17bfa4b643bbb4f; Tue, 09 Mar 2021 15:03:54 +0000 (UTC) From: Casey Schaufler To: casey.schaufler@intel.com, jmorris@namei.org, linux-security-module@vger.kernel.org, selinux@vger.kernel.org Cc: casey@schaufler-ca.com, linux-audit@redhat.com, keescook@chromium.org, john.johansen@canonical.com, penguin-kernel@i-love.sakura.ne.jp, paul@paul-moore.com, sds@tycho.nsa.gov, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v25 19/25] NET: Store LSM netlabel data in a lsmblob Date: Tue, 9 Mar 2021 06:42:37 -0800 Message-Id: <20210309144243.12519-20-casey@schaufler-ca.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210309144243.12519-1-casey@schaufler-ca.com> References: <20210309144243.12519-1-casey@schaufler-ca.com> MIME-Version: 1.0 Precedence: bulk List-ID: Netlabel uses LSM interfaces requiring an lsmblob and the internal storage is used to pass information between these interfaces, so change the internal data from a secid to a lsmblob. Update the netlabel interfaces and their callers to accommodate the change. This requires that the modules using netlabel use the lsm_id.slot to access the correct secid when using netlabel. Reviewed-by: Kees Cook Reviewed-by: John Johansen Acked-by: Stephen Smalley Acked-by: Paul Moore Signed-off-by: Casey Schaufler Cc: netdev@vger.kernel.org --- include/net/netlabel.h | 8 +-- net/ipv4/cipso_ipv4.c | 26 ++++++---- net/netlabel/netlabel_kapi.c | 6 +-- net/netlabel/netlabel_unlabeled.c | 79 +++++++++-------------------- net/netlabel/netlabel_unlabeled.h | 2 +- security/selinux/hooks.c | 2 +- security/selinux/include/security.h | 1 + security/selinux/netlabel.c | 2 +- security/selinux/ss/services.c | 4 +- security/smack/smack.h | 1 + security/smack/smack_access.c | 2 +- security/smack/smack_lsm.c | 11 ++-- security/smack/smackfs.c | 10 ++-- 13 files changed, 68 insertions(+), 86 deletions(-) diff --git a/include/net/netlabel.h b/include/net/netlabel.h index 43ae50337685..73fc25b4042b 100644 --- a/include/net/netlabel.h +++ b/include/net/netlabel.h @@ -166,7 +166,7 @@ struct netlbl_lsm_catmap { * @attr.mls: MLS sensitivity label * @attr.mls.cat: MLS category bitmap * @attr.mls.lvl: MLS sensitivity level - * @attr.secid: LSM specific secid token + * @attr.lsmblob: LSM specific data * * Description: * This structure is used to pass security attributes between NetLabel and the @@ -201,7 +201,7 @@ struct netlbl_lsm_secattr { struct netlbl_lsm_catmap *cat; u32 lvl; } mls; - u32 secid; + struct lsmblob lsmblob; } attr; }; @@ -415,7 +415,7 @@ int netlbl_cfg_unlbl_static_add(struct net *net, const void *addr, const void *mask, u16 family, - u32 secid, + struct lsmblob *lsmblob, struct netlbl_audit *audit_info); int netlbl_cfg_unlbl_static_del(struct net *net, const char *dev_name, @@ -523,7 +523,7 @@ static inline int netlbl_cfg_unlbl_static_add(struct net *net, const void *addr, const void *mask, u16 family, - u32 secid, + struct lsmblob *lsmblob, struct netlbl_audit *audit_info) { return -ENOSYS; diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c index 471d33a0d095..1ac343d02b58 100644 --- a/net/ipv4/cipso_ipv4.c +++ b/net/ipv4/cipso_ipv4.c @@ -106,15 +106,17 @@ int cipso_v4_rbm_strictvalid = 1; /* Base length of the local tag (non-standard tag). * Tag definition (may change between kernel versions) * - * 0 8 16 24 32 - * +----------+----------+----------+----------+ - * | 10000000 | 00000110 | 32-bit secid value | - * +----------+----------+----------+----------+ - * | in (host byte order)| - * +----------+----------+ - * + * 0 8 16 16 + sizeof(struct lsmblob) + * +----------+----------+---------------------+ + * | 10000000 | 00000110 | LSM blob data | + * +----------+----------+---------------------+ + * + * All secid and flag fields are in host byte order. + * The lsmblob structure size varies depending on which + * Linux security modules are built in the kernel. + * The data is opaque. */ -#define CIPSO_V4_TAG_LOC_BLEN 6 +#define CIPSO_V4_TAG_LOC_BLEN (2 + sizeof(struct lsmblob)) /* * Helper Functions @@ -1469,7 +1471,11 @@ static int cipso_v4_gentag_loc(const struct cipso_v4_doi *doi_def, buffer[0] = CIPSO_V4_TAG_LOCAL; buffer[1] = CIPSO_V4_TAG_LOC_BLEN; - *(u32 *)&buffer[2] = secattr->attr.secid; + /* Ensure that there is sufficient space in the CIPSO header + * for the LSM data. */ + BUILD_BUG_ON(CIPSO_V4_TAG_LOC_BLEN > CIPSO_V4_OPT_LEN_MAX); + memcpy(&buffer[2], &secattr->attr.lsmblob, + sizeof(secattr->attr.lsmblob)); return CIPSO_V4_TAG_LOC_BLEN; } @@ -1489,7 +1495,7 @@ static int cipso_v4_parsetag_loc(const struct cipso_v4_doi *doi_def, const unsigned char *tag, struct netlbl_lsm_secattr *secattr) { - secattr->attr.secid = *(u32 *)&tag[2]; + memcpy(&secattr->attr.lsmblob, &tag[2], sizeof(secattr->attr.lsmblob)); secattr->flags |= NETLBL_SECATTR_SECID; return 0; diff --git a/net/netlabel/netlabel_kapi.c b/net/netlabel/netlabel_kapi.c index 5e1239cef000..bbfaff539416 100644 --- a/net/netlabel/netlabel_kapi.c +++ b/net/netlabel/netlabel_kapi.c @@ -196,7 +196,7 @@ int netlbl_cfg_unlbl_map_add(const char *domain, * @addr: IP address in network byte order (struct in[6]_addr) * @mask: address mask in network byte order (struct in[6]_addr) * @family: address family - * @secid: LSM secid value for the entry + * @lsmblob: LSM data value for the entry * @audit_info: NetLabel audit information * * Description: @@ -210,7 +210,7 @@ int netlbl_cfg_unlbl_static_add(struct net *net, const void *addr, const void *mask, u16 family, - u32 secid, + struct lsmblob *lsmblob, struct netlbl_audit *audit_info) { u32 addr_len; @@ -230,7 +230,7 @@ int netlbl_cfg_unlbl_static_add(struct net *net, return netlbl_unlhsh_add(net, dev_name, addr, mask, addr_len, - secid, audit_info); + lsmblob, audit_info); } /** diff --git a/net/netlabel/netlabel_unlabeled.c b/net/netlabel/netlabel_unlabeled.c index aa53a94115f4..3befe0738d31 100644 --- a/net/netlabel/netlabel_unlabeled.c +++ b/net/netlabel/netlabel_unlabeled.c @@ -66,7 +66,7 @@ struct netlbl_unlhsh_tbl { #define netlbl_unlhsh_addr4_entry(iter) \ container_of(iter, struct netlbl_unlhsh_addr4, list) struct netlbl_unlhsh_addr4 { - u32 secid; + struct lsmblob lsmblob; struct netlbl_af4list list; struct rcu_head rcu; @@ -74,7 +74,7 @@ struct netlbl_unlhsh_addr4 { #define netlbl_unlhsh_addr6_entry(iter) \ container_of(iter, struct netlbl_unlhsh_addr6, list) struct netlbl_unlhsh_addr6 { - u32 secid; + struct lsmblob lsmblob; struct netlbl_af6list list; struct rcu_head rcu; @@ -220,7 +220,7 @@ static struct netlbl_unlhsh_iface *netlbl_unlhsh_search_iface(int ifindex) * @iface: the associated interface entry * @addr: IPv4 address in network byte order * @mask: IPv4 address mask in network byte order - * @secid: LSM secid value for entry + * @lsmblob: LSM data value for entry * * Description: * Add a new address entry into the unlabeled connection hash table using the @@ -231,7 +231,7 @@ static struct netlbl_unlhsh_iface *netlbl_unlhsh_search_iface(int ifindex) static int netlbl_unlhsh_add_addr4(struct netlbl_unlhsh_iface *iface, const struct in_addr *addr, const struct in_addr *mask, - u32 secid) + struct lsmblob *lsmblob) { int ret_val; struct netlbl_unlhsh_addr4 *entry; @@ -243,7 +243,7 @@ static int netlbl_unlhsh_add_addr4(struct netlbl_unlhsh_iface *iface, entry->list.addr = addr->s_addr & mask->s_addr; entry->list.mask = mask->s_addr; entry->list.valid = 1; - entry->secid = secid; + entry->lsmblob = *lsmblob; spin_lock(&netlbl_unlhsh_lock); ret_val = netlbl_af4list_add(&entry->list, &iface->addr4_list); @@ -260,7 +260,7 @@ static int netlbl_unlhsh_add_addr4(struct netlbl_unlhsh_iface *iface, * @iface: the associated interface entry * @addr: IPv6 address in network byte order * @mask: IPv6 address mask in network byte order - * @secid: LSM secid value for entry + * @lsmblob: LSM data value for entry * * Description: * Add a new address entry into the unlabeled connection hash table using the @@ -271,7 +271,7 @@ static int netlbl_unlhsh_add_addr4(struct netlbl_unlhsh_iface *iface, static int netlbl_unlhsh_add_addr6(struct netlbl_unlhsh_iface *iface, const struct in6_addr *addr, const struct in6_addr *mask, - u32 secid) + struct lsmblob *lsmblob) { int ret_val; struct netlbl_unlhsh_addr6 *entry; @@ -287,7 +287,7 @@ static int netlbl_unlhsh_add_addr6(struct netlbl_unlhsh_iface *iface, entry->list.addr.s6_addr32[3] &= mask->s6_addr32[3]; entry->list.mask = *mask; entry->list.valid = 1; - entry->secid = secid; + entry->lsmblob = *lsmblob; spin_lock(&netlbl_unlhsh_lock); ret_val = netlbl_af6list_add(&entry->list, &iface->addr6_list); @@ -366,7 +366,7 @@ int netlbl_unlhsh_add(struct net *net, const void *addr, const void *mask, u32 addr_len, - u32 secid, + struct lsmblob *lsmblob, struct netlbl_audit *audit_info) { int ret_val; @@ -375,7 +375,6 @@ int netlbl_unlhsh_add(struct net *net, struct netlbl_unlhsh_iface *iface; struct audit_buffer *audit_buf = NULL; struct lsmcontext context; - struct lsmblob blob; if (addr_len != sizeof(struct in_addr) && addr_len != sizeof(struct in6_addr)) @@ -408,7 +407,7 @@ int netlbl_unlhsh_add(struct net *net, const struct in_addr *addr4 = addr; const struct in_addr *mask4 = mask; - ret_val = netlbl_unlhsh_add_addr4(iface, addr4, mask4, secid); + ret_val = netlbl_unlhsh_add_addr4(iface, addr4, mask4, lsmblob); if (audit_buf != NULL) netlbl_af4list_audit_addr(audit_buf, 1, dev_name, @@ -421,7 +420,7 @@ int netlbl_unlhsh_add(struct net *net, const struct in6_addr *addr6 = addr; const struct in6_addr *mask6 = mask; - ret_val = netlbl_unlhsh_add_addr6(iface, addr6, mask6, secid); + ret_val = netlbl_unlhsh_add_addr6(iface, addr6, mask6, lsmblob); if (audit_buf != NULL) netlbl_af6list_audit_addr(audit_buf, 1, dev_name, @@ -438,11 +437,7 @@ int netlbl_unlhsh_add(struct net *net, unlhsh_add_return: rcu_read_unlock(); if (audit_buf != NULL) { - /* lsmblob_init() puts secid into all of the secids in blob. - * security_secid_to_secctx() will know which security module - * to use to create the secctx. */ - lsmblob_init(&blob, secid); - if (security_secid_to_secctx(&blob, &context) == 0) { + if (security_secid_to_secctx(lsmblob, &context) == 0) { audit_log_format(audit_buf, " sec_obj=%s", context.context); security_release_secctx(&context); @@ -477,7 +472,6 @@ static int netlbl_unlhsh_remove_addr4(struct net *net, struct audit_buffer *audit_buf; struct net_device *dev; struct lsmcontext context; - struct lsmblob blob; spin_lock(&netlbl_unlhsh_lock); list_entry = netlbl_af4list_remove(addr->s_addr, mask->s_addr, @@ -497,13 +491,8 @@ static int netlbl_unlhsh_remove_addr4(struct net *net, addr->s_addr, mask->s_addr); if (dev != NULL) dev_put(dev); - /* lsmblob_init() puts entry->secid into all of the secids - * in blob. security_secid_to_secctx() will know which - * security module to use to create the secctx. */ - if (entry != NULL) - lsmblob_init(&blob, entry->secid); if (entry != NULL && - security_secid_to_secctx(&blob, &context) == 0) { + security_secid_to_secctx(&entry->lsmblob, &context) == 0) { audit_log_format(audit_buf, " sec_obj=%s", context.context); security_release_secctx(&context); @@ -544,7 +533,6 @@ static int netlbl_unlhsh_remove_addr6(struct net *net, struct audit_buffer *audit_buf; struct net_device *dev; struct lsmcontext context; - struct lsmblob blob; spin_lock(&netlbl_unlhsh_lock); list_entry = netlbl_af6list_remove(addr, mask, &iface->addr6_list); @@ -563,13 +551,8 @@ static int netlbl_unlhsh_remove_addr6(struct net *net, addr, mask); if (dev != NULL) dev_put(dev); - /* lsmblob_init() puts entry->secid into all of the secids - * in blob. security_secid_to_secctx() will know which - * security module to use to create the secctx. */ - if (entry != NULL) - lsmblob_init(&blob, entry->secid); if (entry != NULL && - security_secid_to_secctx(&blob, &context) == 0) { + security_secid_to_secctx(&entry->lsmblob, &context) == 0) { audit_log_format(audit_buf, " sec_obj=%s", context.context); security_release_secctx(&context); @@ -923,14 +906,8 @@ static int netlbl_unlabel_staticadd(struct sk_buff *skb, if (ret_val != 0) return ret_val; - /* netlbl_unlhsh_add will be changed to pass a struct lsmblob * - * instead of a u32 later in this patch set. security_secctx_to_secid() - * will only be setting one entry in the lsmblob struct, so it is - * safe to use lsmblob_value() to get that one value. */ - - return netlbl_unlhsh_add(&init_net, - dev_name, addr, mask, addr_len, - lsmblob_value(&blob), &audit_info); + return netlbl_unlhsh_add(&init_net, dev_name, addr, mask, addr_len, + &blob, &audit_info); } /** @@ -977,11 +954,8 @@ static int netlbl_unlabel_staticadddef(struct sk_buff *skb, if (ret_val != 0) return ret_val; - /* security_secctx_to_secid() will only put one secid into the lsmblob - * so it's safe to use lsmblob_value() to get the secid. */ - return netlbl_unlhsh_add(&init_net, - NULL, addr, mask, addr_len, - lsmblob_value(&blob), &audit_info); + return netlbl_unlhsh_add(&init_net, NULL, addr, mask, addr_len, &blob, + &audit_info); } /** @@ -1093,8 +1067,7 @@ static int netlbl_unlabel_staticlist_gen(u32 cmd, struct net_device *dev; struct lsmcontext context; void *data; - u32 secid; - struct lsmblob blob; + struct lsmblob *lsmb; data = genlmsg_put(cb_arg->skb, NETLINK_CB(cb_arg->nl_cb->skb).portid, cb_arg->seq, &netlbl_unlabel_gnl_family, @@ -1132,7 +1105,7 @@ static int netlbl_unlabel_staticlist_gen(u32 cmd, if (ret_val != 0) goto list_cb_failure; - secid = addr4->secid; + lsmb = (struct lsmblob *)&addr4->lsmblob; } else { ret_val = nla_put_in6_addr(cb_arg->skb, NLBL_UNLABEL_A_IPV6ADDR, @@ -1146,14 +1119,10 @@ static int netlbl_unlabel_staticlist_gen(u32 cmd, if (ret_val != 0) goto list_cb_failure; - secid = addr6->secid; + lsmb = (struct lsmblob *)&addr6->lsmblob; } - /* lsmblob_init() secid into all of the secids in blob. - * security_secid_to_secctx() will know which security module - * to use to create the secctx. */ - lsmblob_init(&blob, secid); - ret_val = security_secid_to_secctx(&blob, &context); + ret_val = security_secid_to_secctx(lsmb, &context); if (ret_val != 0) goto list_cb_failure; ret_val = nla_put(cb_arg->skb, @@ -1512,7 +1481,7 @@ int netlbl_unlabel_getattr(const struct sk_buff *skb, &iface->addr4_list); if (addr4 == NULL) goto unlabel_getattr_nolabel; - secattr->attr.secid = netlbl_unlhsh_addr4_entry(addr4)->secid; + secattr->attr.lsmblob = netlbl_unlhsh_addr4_entry(addr4)->lsmblob; break; } #if IS_ENABLED(CONFIG_IPV6) @@ -1525,7 +1494,7 @@ int netlbl_unlabel_getattr(const struct sk_buff *skb, &iface->addr6_list); if (addr6 == NULL) goto unlabel_getattr_nolabel; - secattr->attr.secid = netlbl_unlhsh_addr6_entry(addr6)->secid; + secattr->attr.lsmblob = netlbl_unlhsh_addr6_entry(addr6)->lsmblob; break; } #endif /* IPv6 */ diff --git a/net/netlabel/netlabel_unlabeled.h b/net/netlabel/netlabel_unlabeled.h index 058e3a285d56..168920780994 100644 --- a/net/netlabel/netlabel_unlabeled.h +++ b/net/netlabel/netlabel_unlabeled.h @@ -211,7 +211,7 @@ int netlbl_unlhsh_add(struct net *net, const void *addr, const void *mask, u32 addr_len, - u32 secid, + struct lsmblob *lsmblob, struct netlbl_audit *audit_info); int netlbl_unlhsh_remove(struct net *net, const char *dev_name, diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index 3141ed8544de..5ed2164ea0e4 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -7045,7 +7045,7 @@ static int selinux_perf_event_write(struct perf_event *event) } #endif -static struct lsm_id selinux_lsmid __lsm_ro_after_init = { +struct lsm_id selinux_lsmid __lsm_ro_after_init = { .lsm = "selinux", .slot = LSMBLOB_NEEDED }; diff --git a/security/selinux/include/security.h b/security/selinux/include/security.h index 6fe25300b89d..76c251c49398 100644 --- a/security/selinux/include/security.h +++ b/security/selinux/include/security.h @@ -73,6 +73,7 @@ struct netlbl_lsm_secattr; extern int selinux_enabled_boot; +extern struct lsm_id selinux_lsmid; /* * type_datum properties diff --git a/security/selinux/netlabel.c b/security/selinux/netlabel.c index 6a94b31b5472..d8d7603ab14e 100644 --- a/security/selinux/netlabel.c +++ b/security/selinux/netlabel.c @@ -108,7 +108,7 @@ static struct netlbl_lsm_secattr *selinux_netlbl_sock_getattr( return NULL; if ((secattr->flags & NETLBL_SECATTR_SECID) && - (secattr->attr.secid == sid)) + (secattr->attr.lsmblob.secid[selinux_lsmid.slot] == sid)) return secattr; return NULL; diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c index 3438d0130378..c183492dd48f 100644 --- a/security/selinux/ss/services.c +++ b/security/selinux/ss/services.c @@ -3785,7 +3785,7 @@ int security_netlbl_secattr_to_sid(struct selinux_state *state, if (secattr->flags & NETLBL_SECATTR_CACHE) *sid = *(u32 *)secattr->cache->data; else if (secattr->flags & NETLBL_SECATTR_SECID) - *sid = secattr->attr.secid; + *sid = secattr->attr.lsmblob.secid[selinux_lsmid.slot]; else if (secattr->flags & NETLBL_SECATTR_MLS_LVL) { rc = -EIDRM; ctx = sidtab_search(sidtab, SECINITSID_NETMSG); @@ -3861,7 +3861,7 @@ int security_netlbl_sid_to_secattr(struct selinux_state *state, if (secattr->domain == NULL) goto out; - secattr->attr.secid = sid; + secattr->attr.lsmblob.secid[selinux_lsmid.slot] = sid; secattr->flags |= NETLBL_SECATTR_DOMAIN_CPY | NETLBL_SECATTR_SECID; mls_export_netlbl_lvl(policydb, ctx, secattr); rc = mls_export_netlbl_cat(policydb, ctx, secattr); diff --git a/security/smack/smack.h b/security/smack/smack.h index 0f8d0feb89a4..b06fc332a1f9 100644 --- a/security/smack/smack.h +++ b/security/smack/smack.h @@ -303,6 +303,7 @@ int smack_populate_secattr(struct smack_known *skp); * Shared data. */ extern int smack_enabled; +extern struct lsm_id smack_lsmid; extern int smack_cipso_direct; extern int smack_cipso_mapped; extern struct smack_known *smack_net_ambient; diff --git a/security/smack/smack_access.c b/security/smack/smack_access.c index 7eabb448acab..fccd5da3014e 100644 --- a/security/smack/smack_access.c +++ b/security/smack/smack_access.c @@ -522,7 +522,7 @@ int smack_populate_secattr(struct smack_known *skp) { int slen; - skp->smk_netlabel.attr.secid = skp->smk_secid; + skp->smk_netlabel.attr.lsmblob.secid[smack_lsmid.slot] = skp->smk_secid; skp->smk_netlabel.domain = skp->smk_known; skp->smk_netlabel.cache = netlbl_secattr_cache_alloc(GFP_ATOMIC); if (skp->smk_netlabel.cache != NULL) { diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c index 576f412b8616..1c14983f87c7 100644 --- a/security/smack/smack_lsm.c +++ b/security/smack/smack_lsm.c @@ -3723,11 +3723,12 @@ static struct smack_known *smack_from_secattr(struct netlbl_lsm_secattr *sap, if ((sap->flags & NETLBL_SECATTR_CACHE) != 0) return (struct smack_known *)sap->cache->data; + /* + * Looks like a fallback, which gives us a secid. + */ if ((sap->flags & NETLBL_SECATTR_SECID) != 0) - /* - * Looks like a fallback, which gives us a secid. - */ - return smack_from_secid(sap->attr.secid); + return smack_from_secid( + sap->attr.lsmblob.secid[smack_lsmid.slot]); if ((sap->flags & NETLBL_SECATTR_MLS_LVL) != 0) { /* @@ -4703,7 +4704,7 @@ struct lsm_blob_sizes smack_blob_sizes __lsm_ro_after_init = { .lbs_sock = sizeof(struct socket_smack), }; -static struct lsm_id smack_lsmid __lsm_ro_after_init = { +struct lsm_id smack_lsmid __lsm_ro_after_init = { .lsm = "smack", .slot = LSMBLOB_NEEDED }; diff --git a/security/smack/smackfs.c b/security/smack/smackfs.c index 22ded2c26089..e592e10397af 100644 --- a/security/smack/smackfs.c +++ b/security/smack/smackfs.c @@ -1140,6 +1140,7 @@ static void smk_net4addr_insert(struct smk_net4addr *new) static ssize_t smk_write_net4addr(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { + struct lsmblob lsmblob; struct smk_net4addr *snp; struct sockaddr_in newname; char *smack; @@ -1271,10 +1272,13 @@ static ssize_t smk_write_net4addr(struct file *file, const char __user *buf, * this host so that incoming packets get labeled. * but only if we didn't get the special CIPSO option */ - if (rc == 0 && skp != NULL) + if (rc == 0 && skp != NULL) { + lsmblob_init(&lsmblob, 0); + lsmblob.secid[smack_lsmid.slot] = snp->smk_label->smk_secid; rc = netlbl_cfg_unlbl_static_add(&init_net, NULL, - &snp->smk_host, &snp->smk_mask, PF_INET, - snp->smk_label->smk_secid, &audit_info); + &snp->smk_host, &snp->smk_mask, PF_INET, &lsmblob, + &audit_info); + } if (rc == 0) rc = count;