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author | Jeff Mahoney <jeffm@suse.com> | 2015-11-06 15:17:30 -0500 |
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committer | John Johansen <john.johansen@canonical.com> | 2016-07-12 08:43:10 -0700 |
commit | ff118479a76dbece9ae1c65c7c6a3ebe9cfa73e0 (patch) | |
tree | f3c092146e85c89ed03b3cc708af9ad428593025 /security/keys/trusted.c | |
parent | 38dbd7d8be36b5e68c96a24b406f3653180c1c03 (diff) | |
download | linux-stable-ff118479a76dbece9ae1c65c7c6a3ebe9cfa73e0.tar.gz linux-stable-ff118479a76dbece9ae1c65c7c6a3ebe9cfa73e0.tar.bz2 linux-stable-ff118479a76dbece9ae1c65c7c6a3ebe9cfa73e0.zip |
apparmor: allow SYS_CAP_RESOURCE to be sufficient to prlimit another task
While using AppArmor, SYS_CAP_RESOURCE is insufficient to call prlimit
on another task. The only other example of a AppArmor mediating access to
another, already running, task (ignoring fork+exec) is ptrace.
The AppArmor model for ptrace is that one of the following must be true:
1) The tracer is unconfined
2) The tracer is in complain mode
3) The tracer and tracee are confined by the same profile
4) The tracer is confined but has SYS_CAP_PTRACE
1), 2, and 3) are already true for setrlimit.
We can match the ptrace model just by allowing CAP_SYS_RESOURCE.
We still test the values of the rlimit since it can always be overridden
using a value that means unlimited for a particular resource.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
Diffstat (limited to 'security/keys/trusted.c')
0 files changed, 0 insertions, 0 deletions