Linux/security/integrity/ima/Kconfig

Version: ~ [ linux-6.12-rc7 ] ~ [ linux-6.11.7 ] ~ [ linux-6.10.14 ] ~ [ linux-6.9.12 ] ~ [ linux-6.8.12 ] ~ [ linux-6.7.12 ] ~ [ linux-6.6.60 ] ~ [ linux-6.5.13 ] ~ [ linux-6.4.16 ] ~ [ linux-6.3.13 ] ~ [ linux-6.2.16 ] ~ [ linux-6.1.116 ] ~ [ linux-6.0.19 ] ~ [ linux-5.19.17 ] ~ [ linux-5.18.19 ] ~ [ linux-5.17.15 ] ~ [ linux-5.16.20 ] ~ [ linux-5.15.171 ] ~ [ linux-5.14.21 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.229 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.285 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.323 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.336 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.337 ] ~ [ linux-4.4.302 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.12 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

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1 # SPDX-License-Identifier: GPL-2.0-only << 2 # IBM Integrity Measurement Architecture 1 # IBM Integrity Measurement Architecture 3 # 2 # 4 config IMA 3 config IMA 5 bool "Integrity Measurement Architectu 4 bool "Integrity Measurement Architecture(IMA)" 6 select SECURITYFS 5 select SECURITYFS 7 select CRYPTO 6 select CRYPTO 8 select CRYPTO_HMAC 7 select CRYPTO_HMAC >> 8 select CRYPTO_MD5 9 select CRYPTO_SHA1 9 select CRYPTO_SHA1 10 select CRYPTO_HASH_INFO 10 select CRYPTO_HASH_INFO 11 select SECURITY_PATH !! 11 select TCG_TPM if HAS_IOMEM && !UML 12 select TCG_TPM if HAS_IOMEM << 13 select TCG_TIS if TCG_TPM && X86 12 select TCG_TIS if TCG_TPM && X86 14 select TCG_CRB if TCG_TPM && ACPI << 15 select TCG_IBMVTPM if TCG_TPM && PPC_P 13 select TCG_IBMVTPM if TCG_TPM && PPC_PSERIES 16 select INTEGRITY_AUDIT if AUDIT << 17 help 14 help 18 The Trusted Computing Group(TCG) run 15 The Trusted Computing Group(TCG) runtime Integrity 19 Measurement Architecture(IMA) mainta 16 Measurement Architecture(IMA) maintains a list of hash 20 values of executables and other sens 17 values of executables and other sensitive system files, 21 as they are read or executed. If an 18 as they are read or executed. If an attacker manages 22 to change the contents of an importa 19 to change the contents of an important system file 23 being measured, we can tell. 20 being measured, we can tell. 24 21 25 If your system has a TPM chip, then 22 If your system has a TPM chip, then IMA also maintains 26 an aggregate integrity value over th 23 an aggregate integrity value over this list inside the 27 TPM hardware, so that the TPM can pr 24 TPM hardware, so that the TPM can prove to a third party 28 whether or not critical system files 25 whether or not critical system files have been modified. 29 Read <https://www.usenix.org/events/ !! 26 Read <http://www.usenix.org/events/sec04/tech/sailer.html> 30 to learn more about IMA. 27 to learn more about IMA. 31 If unsure, say N. 28 If unsure, say N. 32 29 33 if IMA << 34 << 35 config IMA_KEXEC << 36 bool "Enable carrying the IMA measurem << 37 depends on TCG_TPM && HAVE_IMA_KEXEC << 38 default n << 39 help << 40 TPM PCRs are only reset on a hard r << 41 a TPM's quote after a soft boot, th << 42 running kernel must be saved and re << 43 << 44 Depending on the IMA policy, the me << 45 be very large. << 46 << 47 config IMA_MEASURE_PCR_IDX 30 config IMA_MEASURE_PCR_IDX 48 int 31 int >> 32 depends on IMA 49 range 8 14 33 range 8 14 50 default 10 34 default 10 51 help 35 help 52 IMA_MEASURE_PCR_IDX determines the T 36 IMA_MEASURE_PCR_IDX determines the TPM PCR register index 53 that IMA uses to maintain the integr 37 that IMA uses to maintain the integrity aggregate of the 54 measurement list. If unsure, use th 38 measurement list. If unsure, use the default 10. 55 39 56 config IMA_LSM_RULES 40 config IMA_LSM_RULES 57 bool 41 bool 58 depends on AUDIT && (SECURITY_SELINUX !! 42 depends on IMA && AUDIT && (SECURITY_SELINUX || SECURITY_SMACK) 59 default y 43 default y 60 help 44 help 61 Disabling this option will disregard 45 Disabling this option will disregard LSM based policy rules. 62 46 63 choice 47 choice 64 prompt "Default template" 48 prompt "Default template" 65 default IMA_NG_TEMPLATE 49 default IMA_NG_TEMPLATE >> 50 depends on IMA 66 help 51 help 67 Select the default IMA measurement t 52 Select the default IMA measurement template. 68 53 69 The original 'ima' measurement list 54 The original 'ima' measurement list template contains a 70 hash, defined as 20 bytes, and a nul 55 hash, defined as 20 bytes, and a null terminated pathname, 71 limited to 255 characters. The 'ima 56 limited to 255 characters. The 'ima-ng' measurement list 72 template permits both larger hash di 57 template permits both larger hash digests and longer 73 pathnames. The configured default te !! 58 pathnames. 74 by specifying "ima_template=" on the << 75 59 >> 60 config IMA_TEMPLATE >> 61 bool "ima" 76 config IMA_NG_TEMPLATE 62 config IMA_NG_TEMPLATE 77 bool "ima-ng (default)" 63 bool "ima-ng (default)" 78 config IMA_SIG_TEMPLATE 64 config IMA_SIG_TEMPLATE 79 bool "ima-sig" 65 bool "ima-sig" 80 endchoice 66 endchoice 81 67 82 config IMA_DEFAULT_TEMPLATE 68 config IMA_DEFAULT_TEMPLATE 83 string 69 string >> 70 depends on IMA >> 71 default "ima" if IMA_TEMPLATE 84 default "ima-ng" if IMA_NG_TEMPLATE 72 default "ima-ng" if IMA_NG_TEMPLATE 85 default "ima-sig" if IMA_SIG_TEMPLATE 73 default "ima-sig" if IMA_SIG_TEMPLATE 86 74 87 choice 75 choice 88 prompt "Default integrity hash algorit 76 prompt "Default integrity hash algorithm" 89 default IMA_DEFAULT_HASH_SHA1 77 default IMA_DEFAULT_HASH_SHA1 >> 78 depends on IMA 90 help 79 help 91 Select the default hash algorithm u 80 Select the default hash algorithm used for the measurement 92 list, integrity appraisal and audit 81 list, integrity appraisal and audit log. The compiled default 93 hash algorithm can be overwritten u 82 hash algorithm can be overwritten using the kernel command 94 line 'ima_hash=' option. 83 line 'ima_hash=' option. 95 84 96 config IMA_DEFAULT_HASH_SHA1 85 config IMA_DEFAULT_HASH_SHA1 97 bool "SHA1 (default)" 86 bool "SHA1 (default)" 98 depends on CRYPTO_SHA1=y !! 87 depends on CRYPTO_SHA1 99 88 100 config IMA_DEFAULT_HASH_SHA256 89 config IMA_DEFAULT_HASH_SHA256 101 bool "SHA256" 90 bool "SHA256" 102 depends on CRYPTO_SHA256=y !! 91 depends on CRYPTO_SHA256 && !IMA_TEMPLATE 103 92 104 config IMA_DEFAULT_HASH_SHA512 93 config IMA_DEFAULT_HASH_SHA512 105 bool "SHA512" 94 bool "SHA512" 106 depends on CRYPTO_SHA512=y !! 95 depends on CRYPTO_SHA512 && !IMA_TEMPLATE 107 96 108 config IMA_DEFAULT_HASH_WP512 97 config IMA_DEFAULT_HASH_WP512 109 bool "WP512" 98 bool "WP512" 110 depends on CRYPTO_WP512=y !! 99 depends on CRYPTO_WP512 && !IMA_TEMPLATE 111 << 112 config IMA_DEFAULT_HASH_SM3 << 113 bool "SM3" << 114 depends on CRYPTO_SM3_GENERIC= << 115 endchoice 100 endchoice 116 101 117 config IMA_DEFAULT_HASH 102 config IMA_DEFAULT_HASH 118 string 103 string >> 104 depends on IMA 119 default "sha1" if IMA_DEFAULT_HASH_SHA 105 default "sha1" if IMA_DEFAULT_HASH_SHA1 120 default "sha256" if IMA_DEFAULT_HASH_S 106 default "sha256" if IMA_DEFAULT_HASH_SHA256 121 default "sha512" if IMA_DEFAULT_HASH_S 107 default "sha512" if IMA_DEFAULT_HASH_SHA512 122 default "wp512" if IMA_DEFAULT_HASH_WP 108 default "wp512" if IMA_DEFAULT_HASH_WP512 123 default "sm3" if IMA_DEFAULT_HASH_SM3 << 124 109 125 config IMA_WRITE_POLICY 110 config IMA_WRITE_POLICY 126 bool "Enable multiple writes to the IM 111 bool "Enable multiple writes to the IMA policy" >> 112 depends on IMA 127 default n 113 default n 128 help 114 help 129 IMA policy can now be updated multip 115 IMA policy can now be updated multiple times. The new rules get 130 appended to the original policy. Ha 116 appended to the original policy. Have in mind that the rules are 131 scanned in FIFO order so be careful 117 scanned in FIFO order so be careful when you design and add new ones. 132 118 133 If unsure, say N. 119 If unsure, say N. 134 120 135 config IMA_READ_POLICY 121 config IMA_READ_POLICY 136 bool "Enable reading back the current 122 bool "Enable reading back the current IMA policy" >> 123 depends on IMA 137 default y if IMA_WRITE_POLICY 124 default y if IMA_WRITE_POLICY 138 default n if !IMA_WRITE_POLICY 125 default n if !IMA_WRITE_POLICY 139 help 126 help 140 It is often useful to be able to re 127 It is often useful to be able to read back the IMA policy. It is 141 even more important after introduci 128 even more important after introducing CONFIG_IMA_WRITE_POLICY. 142 This option allows the root user to 129 This option allows the root user to see the current policy rules. 143 130 144 config IMA_APPRAISE 131 config IMA_APPRAISE 145 bool "Appraise integrity measurements" 132 bool "Appraise integrity measurements" >> 133 depends on IMA 146 default n 134 default n 147 help 135 help 148 This option enables local measuremen 136 This option enables local measurement integrity appraisal. 149 It requires the system to be labeled 137 It requires the system to be labeled with a security extended 150 attribute containing the file hash m 138 attribute containing the file hash measurement. To protect 151 the security extended attributes fro 139 the security extended attributes from offline attack, enable 152 and configure EVM. 140 and configure EVM. 153 141 154 For more information on integrity ap 142 For more information on integrity appraisal refer to: 155 <http://linux-ima.sourceforge.net> 143 <http://linux-ima.sourceforge.net> 156 If unsure, say N. 144 If unsure, say N. 157 145 158 config IMA_ARCH_POLICY !! 146 config IMA_TRUSTED_KEYRING 159 bool "Enable loading an IMA architectu !! 147 bool "Require all keys on the .ima keyring be signed (deprecated)" 160 depends on (KEXEC_SIG && IMA) || IMA_A !! 148 depends on IMA_APPRAISE && SYSTEM_TRUSTED_KEYRING 161 && INTEGRITY_ASYMMETRIC_KEY !! 149 depends on INTEGRITY_ASYMMETRIC_KEYS 162 default n !! 150 select INTEGRITY_TRUSTED_KEYRING 163 help << 164 This option enables loading an IMA a << 165 based on run time secure boot flags. << 166 << 167 config IMA_APPRAISE_BUILD_POLICY << 168 bool "IMA build time configured policy << 169 depends on IMA_APPRAISE && INTEGRITY_A << 170 default n << 171 help << 172 This option defines an IMA appraisal << 173 is enforced at run time without havi << 174 policy name on the boot command line << 175 policy rules persist after loading a << 176 << 177 Depending on the rules configured, t << 178 modules, firmware, the kexec kernel << 179 to be signed. Unsigned files might << 180 booting or applications from working << 181 << 182 config IMA_APPRAISE_REQUIRE_FIRMWARE_SIGS << 183 bool "Appraise firmware signatures" << 184 depends on IMA_APPRAISE_BUILD_POLICY << 185 default n << 186 help << 187 This option defines a policy requiri << 188 including the regulatory.db. If bot << 189 CFG80211_REQUIRE_SIGNED_REGDB are en << 190 verification methods are necessary. << 191 << 192 config IMA_APPRAISE_REQUIRE_KEXEC_SIGS << 193 bool "Appraise kexec kernel image sign << 194 depends on IMA_APPRAISE_BUILD_POLICY << 195 default n << 196 help << 197 Enabling this rule will require all << 198 be signed and verified by a public k << 199 keyring. << 200 << 201 Kernel image signatures can not be v << 202 kexec_load syscall. Enabling this r << 203 usage. << 204 << 205 config IMA_APPRAISE_REQUIRE_MODULE_SIGS << 206 bool "Appraise kernel modules signatur << 207 depends on IMA_APPRAISE_BUILD_POLICY << 208 default n << 209 help << 210 Enabling this rule will require all << 211 and verified by a public key on the << 212 << 213 Kernel module signatures can only be << 214 via the finit_module syscall. Enabli << 215 the usage of the init_module syscall << 216 << 217 config IMA_APPRAISE_REQUIRE_POLICY_SIGS << 218 bool "Appraise IMA policy signature" << 219 depends on IMA_APPRAISE_BUILD_POLICY << 220 default n << 221 help << 222 Enabling this rule will require the << 223 and verified by a key on the trusted << 224 << 225 config IMA_APPRAISE_BOOTPARAM << 226 bool "ima_appraise boot parameter" << 227 depends on IMA_APPRAISE << 228 default y 151 default y 229 help 152 help 230 This option enables the different "i !! 153 This option requires that all keys added to the .ima 231 (eg. fix, log) from the boot command !! 154 keyring be signed by a key on the system trusted keyring. 232 155 233 config IMA_APPRAISE_MODSIG !! 156 This option is deprecated in favor of INTEGRITY_TRUSTED_KEYRING 234 bool "Support module-style signatures << 235 depends on IMA_APPRAISE << 236 depends on INTEGRITY_ASYMMETRIC_KEYS << 237 select PKCS7_MESSAGE_PARSER << 238 select MODULE_SIG_FORMAT << 239 default n << 240 help << 241 Adds support for signatures appende << 242 appended signature is the same used << 243 The modsig keyword can be used in t << 244 to accept such signatures. << 245 157 246 config IMA_KEYRINGS_PERMIT_SIGNED_BY_BUILTIN_O 158 config IMA_KEYRINGS_PERMIT_SIGNED_BY_BUILTIN_OR_SECONDARY 247 bool "Permit keys validly signed by a !! 159 bool "Permit keys validly signed by a built-in or secondary CA cert (EXPERIMENTAL)" 248 depends on SYSTEM_TRUSTED_KEYRING 160 depends on SYSTEM_TRUSTED_KEYRING 249 depends on SECONDARY_TRUSTED_KEYRING 161 depends on SECONDARY_TRUSTED_KEYRING 250 depends on INTEGRITY_ASYMMETRIC_KEYS 162 depends on INTEGRITY_ASYMMETRIC_KEYS 251 select INTEGRITY_TRUSTED_KEYRING 163 select INTEGRITY_TRUSTED_KEYRING 252 default n 164 default n 253 help 165 help 254 Keys may be added to the IMA or IMA 166 Keys may be added to the IMA or IMA blacklist keyrings, if the 255 key is validly signed by a CA cert i !! 167 key is validly signed by a CA cert in the system built-in or 256 machine (if configured), or secondar !! 168 secondary trusted keyrings. 257 key must also have the digitalSignat << 258 169 259 Intermediate keys between those the 170 Intermediate keys between those the kernel has compiled in and the 260 IMA keys to be added may be added to 171 IMA keys to be added may be added to the system secondary keyring, 261 provided they are validly signed by 172 provided they are validly signed by a key already resident in the 262 built-in, machine (if configured) or !! 173 built-in or secondary trusted keyrings. 263 174 264 config IMA_BLACKLIST_KEYRING 175 config IMA_BLACKLIST_KEYRING 265 bool "Create IMA machine owner blackli 176 bool "Create IMA machine owner blacklist keyrings (EXPERIMENTAL)" 266 depends on SYSTEM_TRUSTED_KEYRING 177 depends on SYSTEM_TRUSTED_KEYRING 267 depends on INTEGRITY_TRUSTED_KEYRING !! 178 depends on IMA_TRUSTED_KEYRING 268 default n 179 default n 269 help 180 help 270 This option creates an IMA blacklis 181 This option creates an IMA blacklist keyring, which contains all 271 revoked IMA keys. It is consulted 182 revoked IMA keys. It is consulted before any other keyring. If 272 the search is successful the reques 183 the search is successful the requested operation is rejected and 273 an error is returned to the caller. 184 an error is returned to the caller. 274 185 275 config IMA_LOAD_X509 186 config IMA_LOAD_X509 276 bool "Load X509 certificate onto the ' 187 bool "Load X509 certificate onto the '.ima' trusted keyring" 277 depends on INTEGRITY_TRUSTED_KEYRING !! 188 depends on IMA_TRUSTED_KEYRING 278 default n 189 default n 279 help 190 help 280 File signature verification is base 191 File signature verification is based on the public keys 281 loaded on the .ima trusted keyring. 192 loaded on the .ima trusted keyring. These public keys are 282 X509 certificates signed by a trust 193 X509 certificates signed by a trusted key on the 283 .system keyring. This option enabl 194 .system keyring. This option enables X509 certificate 284 loading from the kernel onto the '. 195 loading from the kernel onto the '.ima' trusted keyring. 285 196 286 config IMA_X509_PATH 197 config IMA_X509_PATH 287 string "IMA X509 certificate path" 198 string "IMA X509 certificate path" 288 depends on IMA_LOAD_X509 199 depends on IMA_LOAD_X509 289 default "/etc/keys/x509_ima.der" 200 default "/etc/keys/x509_ima.der" 290 help 201 help 291 This option defines IMA X509 certif 202 This option defines IMA X509 certificate path. 292 203 293 config IMA_APPRAISE_SIGNED_INIT 204 config IMA_APPRAISE_SIGNED_INIT 294 bool "Require signed user-space initia 205 bool "Require signed user-space initialization" 295 depends on IMA_LOAD_X509 206 depends on IMA_LOAD_X509 296 default n 207 default n 297 help 208 help 298 This option requires user-space ini 209 This option requires user-space init to be signed. 299 << 300 config IMA_MEASURE_ASYMMETRIC_KEYS << 301 bool << 302 depends on ASYMMETRIC_PUBLIC_KEY_SUBTY << 303 default y << 304 << 305 config IMA_QUEUE_EARLY_BOOT_KEYS << 306 bool << 307 depends on IMA_MEASURE_ASYMMETRIC_KEYS << 308 depends on SYSTEM_TRUSTED_KEYRING << 309 default y << 310 << 311 config IMA_SECURE_AND_OR_TRUSTED_BOOT << 312 bool << 313 depends on IMA_ARCH_POLICY << 314 help << 315 This option is selected by architect << 316 trusted boot based on IMA runtime po << 317 << 318 config IMA_DISABLE_HTABLE << 319 bool "Disable htable to allow measurem << 320 default n << 321 help << 322 This option disables htable to allo << 323 << 324 endif <<

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TOMOYO Linux Cross Reference
Linux/security/integrity/ima/Kconfig

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Differences between /security/integrity/ima/Kconfig (Version linux-6.12-rc7) and /security/integrity/ima/Kconfig (Version linux-4.9.337)

TOMOYO Linux Cross Reference Linux/security/integrity/ima/Kconfig

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Differences between /security/integrity/ima/Kconfig (Version linux-6.12-rc7) and /security/integrity/ima/Kconfig (Version linux-4.9.337)

TOMOYO Linux Cross Reference
Linux/security/integrity/ima/Kconfig