libsepol,checkpolicy: introduce unconfined as a first class concept t… #472
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
…o SELinux Introduce unconfined as a first class concept to SELinux. Previously, SELinux had no such concept and unconfined domains were solely defined by policy. Advantages of elevating to a first class concept: 1. Explicit allow rules for unconfined domains can be omitted, shrinking the policy. 2. The kernel can leverage this knowledge to further optimize checking on unconfined processes. Disadvantages: 1. Yet another juicy target for exploit writers, similar to permissive types. 2. Requires a new policy version/format and bitmap. Signed-off-by: Stephen Smalley <[email protected]>
cgzones
reviewed
Apr 25, 2025
| @@ -1520,7 +1542,7 @@ void policydb_destroy(policydb_t * p) | |||
|
|
|||
| ebitmap_destroy(&p->policycaps); | |||
|
|
|||
| ebitmap_destroy(&p->permissive_map); | |||
| ebitmap_destroy(&p->unconfined_map); | |||
|
Maybe add a statement to https://github.com/SELinuxProject/selinux/blob/main/checkpolicy/tests/policy_allonce.conf for a trivial round-trip test? |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
…o SELinux
Introduce unconfined as a first class concept to SELinux. Previously, SELinux had no such concept and unconfined domains were solely defined by policy.
Advantages of elevating to a first class concept:
Disadvantages: