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commit: 2d3434d450e59823792bf8071e07cacf5c9e9fd4 |
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Author: Nicolas Iooss <nicolas.iooss <AT> m4x <DOT> org> |
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AuthorDate: Tue Dec 27 13:56:26 2016 +0000 |
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Commit: Jason Zaman <perfinion <AT> gentoo <DOT> org> |
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CommitDate: Sun Jan 1 16:26:28 2017 +0000 |
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URL: https://gitweb.gentoo.org/proj/hardened-refpolicy.git/commit/?id=2d3434d4 |
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|
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Allow searching /proc/sys/fs when using /proc/sys/fs/binfmt_misc |
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|
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Interface fs_register_binary_executable_type allow registering |
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interpreters using a filesystem monted on /proc/sys/fs/binfmt_misc. In |
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order to access this filesystem, the process needs to search every |
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parent directory of the mountpoint. |
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|
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Signed-off-by: Nicolas Iooss <nicolas.iooss <AT> m4x.org> |
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|
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policy/modules/kernel/filesystem.if | 2 ++ |
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policy/modules/kernel/kernel.if | 19 +++++++++++++++++++ |
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2 files changed, 21 insertions(+) |
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|
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diff --git a/policy/modules/kernel/filesystem.if b/policy/modules/kernel/filesystem.if |
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index 9471dbe..c85d805 100644 |
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--- a/policy/modules/kernel/filesystem.if |
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+++ b/policy/modules/kernel/filesystem.if |
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@@ -612,6 +612,8 @@ interface(`fs_register_binary_executable_type',` |
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type binfmt_misc_fs_t; |
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') |
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|
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+ # binfmt_misc filesystem is usually mounted on /proc/sys/fs/binfmt_misc |
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+ kernel_search_fs_sysctls($1) |
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rw_files_pattern($1, binfmt_misc_fs_t, binfmt_misc_fs_t) |
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') |
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|
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|
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diff --git a/policy/modules/kernel/kernel.if b/policy/modules/kernel/kernel.if |
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index 29709df..2c7ad0c 100644 |
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--- a/policy/modules/kernel/kernel.if |
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+++ b/policy/modules/kernel/kernel.if |
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@@ -2005,6 +2005,25 @@ interface(`kernel_rw_kernel_sysctl',` |
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|
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######################################## |
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## <summary> |
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+## Search filesystem sysctl directories. |
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+## </summary> |
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+## <param name="domain"> |
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+## <summary> |
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+## Domain allowed access. |
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+## </summary> |
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+## </param> |
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+## <rolecap/> |
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+# |
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+interface(`kernel_search_fs_sysctls',` |
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+ gen_require(` |
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+ type proc_t, sysctl_t, sysctl_fs_t; |
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+ ') |
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+ |
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+ search_dirs_pattern($1, { proc_t sysctl_t sysctl_fs_t }, sysctl_fs_t) |
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+') |
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+ |
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+######################################## |
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+## <summary> |
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## Read filesystem sysctls. |
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## </summary> |
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## <param name="domain"> |
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