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| author | John Johansen <john.johansen@canonical.com> | 2017-01-16 00:42:43 -0800 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2019-05-02 21:42:07 +0100 |
| commit | a62ea6707949c2a49f8a4f62c5b5d4c1703451d3 (patch) | |
| tree | e155478b358afd73d635176a545d61bcbf0ba21d /security | |
| parent | 1e06334afa7199cc86c6c4830b71a7c1ea8e7901 (diff) | |
| download | linux-stable-a62ea6707949c2a49f8a4f62c5b5d4c1703451d3.tar.gz linux-stable-a62ea6707949c2a49f8a4f62c5b5d4c1703451d3.tar.bz2 linux-stable-a62ea6707949c2a49f8a4f62c5b5d4c1703451d3.zip | |
apparmor: provide userspace flag indicating binfmt_elf_mmap change
commit 34c426acb75cc21bdf84685e106db0c1a3565057 upstream.
Commit 9f834ec18def ("binfmt_elf: switch to new creds when switching to new mm")
changed when the creds are installed by the binfmt_elf handler. This
affects which creds are used to mmap the executable into the address
space. Which can have an affect on apparmor policy.
Add a flag to apparmor at
/sys/kernel/security/apparmor/features/domain/fix_binfmt_elf_mmap
to make it possible to detect this semantic change so that the userspace
tools and the regression test suite can correctly deal with the change.
BugLink: http://bugs.launchpad.net/bugs/1630069
Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'security')
| -rw-r--r-- | security/apparmor/apparmorfs.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/security/apparmor/apparmorfs.c b/security/apparmor/apparmorfs.c index 7db9954f1af2..885804062795 100644 --- a/security/apparmor/apparmorfs.c +++ b/security/apparmor/apparmorfs.c @@ -794,6 +794,7 @@ static struct aa_fs_entry aa_fs_entry_domain[] = { AA_FS_FILE_BOOLEAN("change_hatv", 1), AA_FS_FILE_BOOLEAN("change_onexec", 1), AA_FS_FILE_BOOLEAN("change_profile", 1), + AA_FS_FILE_BOOLEAN("fix_binfmt_elf_mmap", 1), { } }; |