linux.git/security/apparmor/task.c, branch v6.18.21

apparmor: transition from a list of rules to a vector of rules

2025-07-20T09:31:06+00:00

The set of rules on a profile is not dynamically extended, instead
if a new ruleset is needed a new version of the profile is created.
This allows us to use a vector of rules instead of a list, slightly
reducing memory usage and simplifying the code.

Signed-off-by: John Johansen

apparmor: add missing params to aa_may_ptrace kernel-doc comments

2023-11-19T09:19:41+00:00

When the cred was explicit passed through to aa_may_ptrace() the
kernel-doc comment was not properly updated.

Reported-by: kernel test robot 
Closes: https://lore.kernel.org/oe-kbuild-all/202311040508.AUhi04RY-lkp@intel.com/
Signed-off-by: John Johansen

apparmor: add user namespace creation mediation

2023-10-18T22:49:02+00:00

Unprivileged user namespace creation is often used as a first step
in privilege escalation attacks. Instead of disabling it at the
sysrq level, which blocks its legitimate use as for setting up a sandbox,
allow control on a per domain basis.

This allows an admin to quickly lock down a system while also still
allowing legitimate use.

Reviewed-by: Georgia Garcia 
Signed-off-by: John Johansen

apparmor: pass cred through to audit info.

2023-10-18T22:30:38+00:00

The cred is needed to properly audit some messages, and will be needed
in the future for uid conditional mediation. So pass it through to
where the apparmor_audit_data struct gets defined.

Reviewed-by: Georgia Garcia 
Signed-off-by: John Johansen

apparmor: rename audit_data->label to audit_data->subj_label

2023-10-18T22:30:34+00:00

rename audit_data's label field to subj_label to better reflect its
use. Also at the same time drop unneeded assignments to ->subj_label
as the later call to aa_check_perms will do the assignment if needed.

Reviewed-by: Georgia Garcia 
Signed-off-by: John Johansen

apparmor: combine common_audit_data and apparmor_audit_data

2023-10-18T22:30:29+00:00

Everywhere where common_audit_data is used apparmor audit_data is also
used. We can simplify the code and drop the use of the aad macro
everywhere by combining the two structures.

Reviewed-by: Georgia Garcia 
Signed-off-by: John Johansen

apparmor: make aa_set_current_onexec return void

2023-07-10T00:30:51+00:00

Change the return type to void since it always return 0, and no need
to do the checking in aa_set_current_onexec.

Signed-off-by: Quanfa Fu 
Reviewed-by: "Tyler Hicks (Microsoft)" 
Signed-off-by: John Johansen

apparmor: Simplify obtain the newest label on a cred

2022-10-03T21:49:04+00:00

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 
Signed-off-by: John Johansen

apparmor: rework profile->rules to be a list

2022-10-03T21:49:04+00:00

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

apparmor: refactor profile rules and attachments

2022-10-03T21:49:04+00:00

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