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audit: Fix wrong task in comparison of session ID 

The audit_filter_rules() function in auditsc.c compared the session ID
with the credentials of the current task, while it should use the
credentials of the task given to audit_filter_rules() as a parameter
(tsk).

GitHub issue:
https://github.com/linux-audit/audit-kernel/issues/82

Fixes: 8fae477056 ("audit: add support for session ID user filter")
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Reviewed-by: Richard Guy Briggs <rgb@redhat.com>
[PM: not user visible, dropped stable]
Signed-off-by: Paul Moore <paul@paul-moore.com>
This commit is contained in:
Ondrej Mosnáček 2018-05-17 17:31:14 +02:00 committed by Paul Moore
parent 5c5b8d8beb
commit 5b71388663
1 changed files with 1 additions and 1 deletions
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2
kernel/auditsc.c
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@ -517,7 +517,7 @@ static int audit_filter_rules(struct task_struct *tsk,
result = audit_gid_comparator(cred->fsgid, f->op, f->gid);
break;
case AUDIT_SESSIONID:
sessionid = audit_get_sessionid(current);
sessionid = audit_get_sessionid(tsk);
result = audit_comparator(sessionid, f->op, f->val);
break;
case AUDIT_PERS: