kernel/linux.git/security/apparmor/net.c, branch v6.6.132

apparmor: refcount the pdb

2026-03-04T12:20:24+00:00

[ Upstream commit 98b824ff8984fd523fc264fbb13208098ab09da3 ] With the move to permission tables the dfa is no longer a stand alone entity when used, needing a minimum of a permission table. However it still could be shared among different pdbs each using a different permission table. Instead of duping the permission table when sharing a pdb, add a refcount to the pdb so it can be easily shared. Reviewed-by: Georgia Garcia Signed-off-by: John Johansen Stable-dep-of: a4c9efa4dbad ("apparmor: make label_match return a consistent value") Signed-off-by: Sasha Levin

apparmor: fix NULL sock in aa_sock_file_perm

2026-03-04T12:20:24+00:00

[ Upstream commit 00b67657535dfea56e84d11492f5c0f61d0af297 ] Deal with the potential that sock and sock-sk can be NULL during socket setup or teardown. This could lead to an oops. The fix for NULL pointer dereference in __unix_needs_revalidation shows this is at least possible for af_unix sockets. While the fix for af_unix sockets applies for newer mediation this is still the fall back path for older af_unix mediation and other sockets, so ensure it is covered. Fixes: 56974a6fcfef6 ("apparmor: add base infastructure for socket mediation") Reviewed-by: Georgia Garcia Signed-off-by: John Johansen Signed-off-by: Sasha Levin

apparmor: pass cred through to audit info.

2023-11-28T17:20:07+00:00

[ Upstream commit 90c436a64a6e20482a9a613c47eb4af2e8a5328e ] 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 Stable-dep-of: 157a3537d6bc ("apparmor: Fix regression in mount mediation") Signed-off-by: Sasha Levin

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

2023-11-28T17:20:07+00:00

[ Upstream commit d20f5a1a6e792d22199c9989ec7ab9e95c48d60c ] 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 Stable-dep-of: 157a3537d6bc ("apparmor: Fix regression in mount mediation") Signed-off-by: Sasha Levin

apparmor: combine common_audit_data and apparmor_audit_data

2023-11-28T17:20:07+00:00

[ Upstream commit bd7bd201ca46c211c3ab251ca9854787d1331a2f ] 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 Stable-dep-of: 157a3537d6bc ("apparmor: Fix regression in mount mediation") Signed-off-by: Sasha Levin

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

apparmor: preparse for state being more than just an integer

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

Convert from an unsigned int to a state_t for state position. This is a step in prepping for the state position carrying some additional flags, and a limited form of backtracking to support variables. Signed-off-by: John Johansen

apparmor: convert policy lookup to use accept as an index

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

Remap polidydb dfa accept table from embedded perms to an index, and then move the perm lookup to use the accept entry as an index into the perm table. This is done so that the perm table can be separated from the dfa, allowing dfa accept to index to share expanded permission sets. Signed-off-by: John Johansen

apparmor: compute policydb permission on profile load

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

Rather than computing policydb permissions for each access permissions can be computed once on profile load and stored for lookup. Signed-off-by: John Johansen