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* Merge tag 'hardening-v6.2-rc1-fixes' of ↵Linus Torvalds2022-12-232-12/+21
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull kernel hardening fixes from Kees Cook: - Fix CFI failure with KASAN (Sami Tolvanen) - Fix LKDTM + CFI under GCC 7 and 8 (Kristina Martsenko) - Limit CONFIG_ZERO_CALL_USED_REGS to Clang > 15.0.6 (Nathan Chancellor) - Ignore "contents" argument in LoadPin's LSM hook handling - Fix paste-o in /sys/kernel/warn_count API docs - Use READ_ONCE() consistently for oops/warn limit reading * tag 'hardening-v6.2-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: cfi: Fix CFI failure with KASAN exit: Use READ_ONCE() for all oops/warn limit reads security: Restrict CONFIG_ZERO_CALL_USED_REGS to gcc or clang > 15.0.6 lkdtm: cfi: Make PAC test work with GCC 7 and 8 docs: Fix path paste-o for /sys/kernel/warn_count LoadPin: Ignore the "contents" argument of the LSM hooks
| * security: Restrict CONFIG_ZERO_CALL_USED_REGS to gcc or clang > 15.0.6Nathan Chancellor2022-12-151-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A bad bug in clang's implementation of -fzero-call-used-regs can result in NULL pointer dereferences (see the links above the check for more information). Restrict CONFIG_CC_HAS_ZERO_CALL_USED_REGS to either a supported GCC version or a clang newer than 15.0.6, which will catch both a theoretical 15.0.7 and the upcoming 16.0.0, which will both have the bug fixed. Cc: stable@vger.kernel.org # v5.15+ Signed-off-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20221214232602.4118147-1-nathan@kernel.org
| * LoadPin: Ignore the "contents" argument of the LSM hooksKees Cook2022-12-141-12/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | LoadPin only enforces the read-only origin of kernel file reads. Whether or not it was a partial read isn't important. Remove the overly conservative checks so that things like partial firmware reads will succeed (i.e. reading a firmware header). Fixes: 2039bda1fa8d ("LSM: Add "contents" flag to kernel_read_file hook") Cc: Paul Moore <paul@paul-moore.com> Cc: James Morris <jmorris@namei.org> Cc: "Serge E. Hallyn" <serge@hallyn.com> Cc: linux-security-module@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Serge Hallyn <serge@hallyn.com> Tested-by: Ping-Ke Shih <pkshih@realtek.com> Link: https://lore.kernel.org/r/20221209195453.never.494-kees@kernel.org
* | Merge tag 'fs.vfsuid.ima.v6.2-rc1' of ↵Linus Torvalds2022-12-211-0/+24
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping Pull vfsuid cleanup from Christian Brauner: "This moves the ima specific vfs{g,u}id_t comparison helpers out of the header and into the one file in ima where they are used. We shouldn't incentivize people to use them by placing them into the header. As discussed and suggested by Linus in [1] let's just define them locally in the one file in ima where they are used" Link: https://lore.kernel.org/lkml/CAHk-=wj4BpEwUd=OkTv1F9uykvSrsBNZJVHMp+p_+e2kiV71_A@mail.gmail.com [1] * tag 'fs.vfsuid.ima.v6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping: mnt_idmapping: move ima-only helpers to ima
| * | mnt_idmapping: move ima-only helpers to imaChristian Brauner2022-12-131-0/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The vfs{g,u}id_{gt,lt}_* helpers are currently not needed outside of ima and we shouldn't incentivize people to use them by placing them into the header. Let's just define them locally in the one file in ima where they are used. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
* | | Merge tag 'apparmor-pr-2022-12-14' of ↵Linus Torvalds2022-12-1435-914/+1632
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor Pull apparmor updates from John Johansen: "Features: - switch to zstd compression for profile raw data Cleanups: - simplify obtaining the newest label on a cred - remove useless static inline functions - compute permission conversion on policy unpack - refactor code to share common permissins - refactor unpack to group policy backwards compatiblity code - add __init annotation to aa_{setup/teardown}_dfa_engine() Bug Fixes: - fix a memleak in - multi_transaction_new() - free_ruleset() - unpack_profile() - alloc_ns() - fix lockdep warning when removing a namespace - fix regression in stacking due to label flags - fix loading of child before parent - fix kernel-doc comments that differ from fns - fix spelling errors in comments - store return value of unpack_perms_table() to signed variable" * tag 'apparmor-pr-2022-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor: (64 commits) apparmor: Fix uninitialized symbol 'array_size' in policy_unpack_test.c apparmor: Add __init annotation to aa_{setup/teardown}_dfa_engine() apparmor: Fix memleak in alloc_ns() apparmor: Fix memleak issue in unpack_profile() apparmor: fix a memleak in free_ruleset() apparmor: Fix spelling of function name in comment block apparmor: Use pointer to struct aa_label for lbs_cred AppArmor: Fix kernel-doc LSM: Fix kernel-doc AppArmor: Fix kernel-doc apparmor: Fix loading of child before parent apparmor: refactor code that alloc null profiles apparmor: fix obsoleted comments for aa_getprocattr() and audit_resource() apparmor: remove useless static inline functions apparmor: Fix unpack_profile() warn: passing zero to 'ERR_PTR' apparmor: fix uninitialize table variable in error in unpack_trans_table apparmor: store return value of unpack_perms_table() to signed variable apparmor: Fix kunit test for out of bounds array apparmor: Fix decompression of rawdata for read back to userspace apparmor: Fix undefined references to zstd_ symbols ...
| * | | apparmor: Fix uninitialized symbol 'array_size' in policy_unpack_test.cJohn Johansen2022-11-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make sure array_size is initialized in the kunit test to get rid of compiler warnings. This will also make sure the following tests fail consistently if the first test fails. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: Add __init annotation to aa_{setup/teardown}_dfa_engine()Xiu Jianfeng2022-11-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The aa_setup_dfa_engine() and aa_teardown_dfa_engine() is only called in apparmor_init(), so let us add __init annotation to them. Fixes: 11c236b89d7c ("apparmor: add a default null dfa") Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: Fix memleak in alloc_ns()Xiu Jianfeng2022-11-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After changes in commit a1bd627b46d1 ("apparmor: share profile name on replacement"), the hname member of struct aa_policy is not valid slab object, but a subset of that, it can not be freed by kfree_sensitive(), use aa_policy_destroy() to fix it. Fixes: a1bd627b46d1 ("apparmor: share profile name on replacement") Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: Fix memleak issue in unpack_profile()Xiu Jianfeng2022-10-251-3/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Before aa_alloc_profile(), it has allocated string for @*ns_name if @tmpns is not NULL, so directly return -ENOMEM if aa_alloc_profile() failed will cause a memleak issue, and even if aa_alloc_profile() succeed, in the @fail_profile tag of aa_unpack(), it need to free @ns_name as well, this patch fixes them. Fixes: 736ec752d95e ("AppArmor: policy routines for loading and unpacking policy") Fixes: 04dc715e24d0 ("apparmor: audit policy ns specified in policy load") Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: fix a memleak in free_ruleset()Gaosheng Cui2022-10-251-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the aa_profile is released, we will call free_ruleset to release aa_ruleset, but we don't free the memory of aa_ruleset, so there will be memleak, fix it. unreferenced object 0xffff8881475df800 (size 1024): comm "apparmor_parser", pid 883, jiffies 4294899650 (age 9114.088s) hex dump (first 32 bytes): 00 f8 5d 47 81 88 ff ff 00 f8 5d 47 81 88 ff ff ..]G......]G.... 00 00 00 00 00 00 00 00 00 dc 65 47 81 88 ff ff ..........eG.... backtrace: [<00000000370e658e>] __kmem_cache_alloc_node+0x182/0x700 [<00000000f2f5a6d2>] kmalloc_trace+0x2c/0x130 [<00000000c5c905b3>] aa_alloc_profile+0x1bc/0x5c0 [<00000000bc4fa72b>] unpack_profile+0x319/0x30c0 [<00000000eab791e9>] aa_unpack+0x307/0x1450 [<000000002c3a6ee1>] aa_replace_profiles+0x1b8/0x3790 [<00000000d0c3fd54>] policy_update+0x35a/0x890 [<00000000d04fed90>] profile_replace+0x1d1/0x260 [<00000000cba0c0a7>] vfs_write+0x283/0xd10 [<000000006bae64a5>] ksys_write+0x134/0x260 [<00000000b2fd8f31>] __x64_sys_write+0x78/0xb0 [<00000000f3c8a015>] do_syscall_64+0x5c/0x90 [<00000000a242b1db>] entry_SYSCALL_64_after_hwframe+0x63/0xcd Fixes: 217af7e2f4de ("apparmor: refactor profile rules and attachments") Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: Fix spelling of function name in comment blockYang Li2022-10-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'resouce' -> 'resource' Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=2396 Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Yang Li <yang.lee@linux.alibaba.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: Use pointer to struct aa_label for lbs_credXiu Jianfeng2022-10-251-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | According to the implementations of cred_label() and set_cred_label(), we should use pointer to struct aa_label for lbs_cred instead of struct aa_task_ctx, this patch fixes it. Fixes: bbd3662a8348 ("Infrastructure management of the cred security blob") Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | AppArmor: Fix kernel-docJiapeng Chong2022-10-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | security/apparmor/ipc.c:53: warning: expecting prototype for audit_cb(). Prototype was for audit_signal_cb() instead. Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=2337 Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | LSM: Fix kernel-docJiapeng Chong2022-10-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | security/apparmor/lsm.c:753: warning: expecting prototype for apparmor_bprm_committed_cred(). Prototype was for apparmor_bprm_committed_creds() instead. Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=2338 Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | AppArmor: Fix kernel-docJiapeng Chong2022-10-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | security/apparmor/audit.c:93: warning: expecting prototype for audit_base(). Prototype was for audit_pre() instead. Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=2339 Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: Fix loading of child before parentJohn Johansen2022-10-251-9/+78
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unfortunately it is possible for some userspace's to load children profiles before the parent profile. This can even happen when the child and the parent are in different load sets. Fix this by creating a null place holder profile that grants no permissions and can be replaced by the parent once it is loaded. Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: refactor code that alloc null profilesJohn Johansen2022-10-254-28/+43
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Bother unconfined and learning profiles use the null profile as their base. Refactor so they are share a common base routine. This doesn't save much atm but will be important when the feature set of the parent is inherited. Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: fix obsoleted comments for aa_getprocattr() and audit_resource()Gaosheng Cui2022-10-252-6/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update the comments for aa_getprocattr() and audit_resource(), the args of them have beed changed since commit 76a1d263aba3 ("apparmor: switch getprocattr to using label_print fns()"). Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: remove useless static inline functionsGaosheng Cui2022-10-252-19/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the following useless static inline functions: 1. label_is_visible() is a static function in security/apparmor/label.c, and it's not used, aa_ns_visible() can do the same things as it, so it's redundant. 2. is_deleted() is a static function in security/apparmor/file.c, and it's not used since commit aebd873e8d3e ("apparmor: refactor path name lookup and permission checks around labels"), so it's redundant. They are redundant, so remove them. Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: Fix unpack_profile() warn: passing zero to 'ERR_PTR'John Johansen2022-10-111-5/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | unpack_profile() sets a default error on entry but this gets overridden by error assignment by functions called in its body. If an error check that was relying on the default value is triggered after one of these error assignments then zero will be passed to ERR_PTR. Fix this by setting up a default -EPROTO assignment in the error path and while we are at it make sure the correct error is returned in non-default cases. Fixes: 217af7e2f4de ("apparmor: refactor profile rules and attachments") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: fix uninitialize table variable in error in unpack_trans_tableJohn Johansen2022-10-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The error path has one case where *table is uninitialized, initialize it. Fixes: a0792e2ceddc ("apparmor: make transition table unpack generic so it can be reused") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: store return value of unpack_perms_table() to signed variableMuhammad Usama Anjum2022-10-041-4/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The unpack_perms_table() can return error which is negative value. Store the return value to a signed variable. policy->size is unsigned variable. It shouldn't be used to store the return status. Fixes: 2d6b2dea7f3c ("apparmor: add the ability for policy to specify a permission table") Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: Fix kunit test for out of bounds arrayJohn Johansen2022-10-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The apparmor kunit tests are failing on the out of bounds array check with the following failure # policy_unpack_test_unpack_array_out_of_bounds: EXPECTATION FAILED at security/apparmor/policy_unpack_test.c:178 Expected unpack_array(puf->e, name, &array_size) == 1, but unpack_array(puf->e, name, &array_size) == -1 # policy_unpack_test_unpack_array_out_of_bounds: EXPECTATION FAILED at security/apparmor/policy_unpack_test.c:180 Expected array_size == 0, but array_size == 64192 not ok 5 - policy_unpack_test_unpack_array_out_of_bounds This is because unpack_array changed to allow distinguishing between the array not being present and an error. In the error case the array size is not set and should not be tested. Reported-by: kernel test robot <yujie.liu@intel.com> Fixes: 995a5b64620e ("apparmor: make unpack_array return a trianary value") Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: Fix decompression of rawdata for read back to userspaceJohn Johansen2022-10-032-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The rawdata readback has a few of problems. First if compression is enabled when the data is read then the compressed data is read out instead decompressing the data. Second if compression of the data fails, the code does not handle holding onto the raw_data in uncompressed form. Third if the compression is enabled/disabled after the rawdata was loaded, the check against the global control of whether to use compression does not reflect what was already done to the data. Fix these by always storing the compressed size, along with the original data size even if compression fails or is not used. And use this to detect whether the rawdata is actually compressed. Fixes: 52ccc20c652b ("apparmor: use zstd compression for profile data") Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Jon Tourville <jon.tourville@canonical.com>
| * | | apparmor: Fix undefined references to zstd_ symbolsJohn Johansen2022-10-033-5/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unfortunately the switch to using zstd compression did not properly ifdef all the code that uses zstd_ symbols. So that if exporting of binary policy is disabled in the config the compile will fail with the following errors security/apparmor/lsm.c:1545: undefined reference to `zstd_min_clevel' aarch64-linux-ld: security/apparmor/lsm.c:1545: undefined reference to `zstd_max_clevel' Reported-by: kernel test robot <lkp@intel.com> Fixes: 52ccc20c652b ("apparmor: use zstd compression for profile data") Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Jon Tourville <jon.tourville@canonical.com>
| * | | apparmor: make sure the decompression ctx is promperly initializedJohn Johansen2022-10-031-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The decompress ctx was not properly initialized when reading raw profile data back to userspace. Reported-by: kernel test robot <lkp@intel.com> Fixes: 52ccc20c652b ("apparmor: use zstd compression for profile data") Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: Remove unnecessary size check when unpacking trans_tableJohn Johansen2022-10-031-3/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The index into the trans_table has a max size of 2^24 bits which the code was testing but this is unnecessary as unpack_array can only unpack a table of 2^16 bits in size so the table unpacked will never be larger than what can be indexed, and any test here is redundant. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: Fix doc comment for compute_fpermsJohn Johansen2022-10-031-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When compute_fperms was moved to policy_compat and made static it was renamed from aa_compute_fperms to just compute_fperms to help indicate it is only available statically. Unfortunately the doc comment did not also get updated to reflect the change. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: make __aa_path_perm() staticXiu Jianfeng2022-10-032-6/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Make __aa_path_perm() static as it's only used inside apparmor/file.c. Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: Simplify obtain the newest label on a credGaosheng Cui2022-10-032-14/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In aa_get_task_label(), aa_get_newest_cred_label(__task_cred(task)) can do the same things as aa_get_newest_label(__aa_task_raw_label(task)), so we can replace it and remove __aa_task_raw_label() to simplify the code. Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: Fix regression in stacking due to label flagsJohn Johansen2022-10-031-5/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The unconfined label flag is not being computed correctly. It should only be set if all the profiles in the vector are set, which is different than what is required for the debug and stale flag that are set if any on the profile flags are set. Fixes: c1ed5da19765 ("apparmor: allow label to carry debug flags") Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: fix aa_class_names[] to match reserved classesJohn Johansen2022-10-031-1/+16
| | | | | | | | | | | | | | | | | | | | | | | | The class name map did not have the reserved names added. Fix this Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: rework profile->rules to be a listJohn Johansen2022-10-0315-57/+142
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert profile->rules to a list as the next step towards supporting multiple rulesets in a profile. For this step only support a single list entry item. The logic for iterating the list will come as a separate step. Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: refactor profile rules and attachmentsJohn Johansen2022-10-0318-239/+308
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In preparation for moving from a single set of rules and a single attachment to multiple rulesets and attachments separate from the profile refactor attachment information and ruleset info into their own structures. Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: verify loaded permission bits masks don't overlapJohn Johansen2022-10-031-4/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add an additional verification that loaded permission sets don't overlap in ways that are not intended. This will help ensure that permission accumulation can't result in an invalid permission set. Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: cleanup: move perm accumulation into perms.hJohn Johansen2022-10-032-52/+53
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Perm accumulation is going to be used much more frequently so let the compiler figure out if it can be optimized when used. Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: make sure perm indexes are accumulatedJohn Johansen2022-10-033-2/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | accumulate permission indexes on a first encountered basis. This favors original rulesets so that new ones can not override without profile replacement. Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: verify permission table indexesJohn Johansen2022-10-031-1/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | While the dfa xindex's are verified, the indexes in the permission table are not currently verified. Fix this. Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: add the ability for policy to specify a permission tableJohn Johansen2022-10-032-11/+98
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently permissions are encoded in the dfa accept entries that are then mapped to an internal permission structure. This limits the permissions that userspace can specify, so allow userspace to directly specify the permission table. Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: make unpack_array return a trianary valueJohn Johansen2022-10-032-22/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | currently unpack_array() does not return an error nor whether the array is not present. The ability to detect an error or the array not being present is needed so rework the unpack_array() to return the needed information. Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: group dfa policydb unpackingJohn Johansen2022-10-031-38/+63
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are currently three policydb rule groupings (xmatch, file, policydb) that each do their own slightly different thing. Group them into a single routine and unify. This extends/unifies dfa features by - all dfas are allowed having an optional start field - all dfas are allowed having a string/transition table Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: make transition table unpack generic so it can be reusedJohn Johansen2022-10-031-10/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently the transition table is tied to the file dfa. Make it so we can unpack a transition table against any dfa. Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: add user mode flagJohn Johansen2022-10-035-5/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow the profile to contain a user mode prompt flag. This works similar to complain mode but will try to send messages to a userspace daemon. If the daemon is not present or timesout regular informent will occur. Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: add mediation class information to auditingJohn Johansen2022-10-0314-13/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Audit messages currently don't contain the mediation class which can make them less clear than they should be in some circumstances. With newer mediation classes coming this potential confusion will become worse. Fix this by adding the mediatin class to the messages. Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: extend permissions to support a label and tag stringJohn Johansen2022-10-037-27/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | add indexes for label and tag entries. Rename the domain table to the str_table as its a shared string table with label and tags. Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: isolate policy backwards compatibility to its own fileJohn Johansen2022-10-035-287/+359
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The details of mapping old policy into newer policy formats clutters up the unpack code and makes it possible to accidentally use old mappings in code, so isolate the mapping code into its own file. This will become more important when the dfa remapping code lands, as it will greatly expand the compat code base. Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: extend xindex sizeJohn Johansen2022-10-033-17/+16
| | | | | | | | | | | | | | | | | | | | | | | | Allow the xindex to have 2^24 entries. Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: move dfa perm macros into policy_unpackJohn Johansen2022-10-032-51/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that the permission remapping macros aren't needed anywhere except during profile unpack, move them. Signed-off-by: John Johansen <john.johansen@canonical.com>
| * | | apparmor: extend policydb permission set by making use of the xbitsJohn Johansen2022-10-031-4/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The policydb permission set has left the xbits unused. Make them available for mediation. Note: that this does not bring full auditing control of the permissions as there are not enough bits. The quieting of denials is provided as that is used more than forced auditing of allowed permissions. Signed-off-by: John Johansen <john.johansen@canonical.com>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-14 08:55:36 +0100