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apparmor: fix mediation of prlimit 

For primit apparmor requires that if target confinement does not match
the setting task's confinement, the setting task requires CAP_SYS_RESOURCE.

Unfortunately this was broken when rlimit enforcement was reworked to
support labels.

Fixes: 86b92cb782 ("apparmor: move resource checks to using labels")
Signed-off-by: John Johansen <john.johansen@canonical.com>
This commit is contained in:
John Johansen 2018-04-11 02:03:26 -07:00
parent a4c3f89c9b
commit 11c92f144b
1 changed files with 1 additions and 1 deletions
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2
security/apparmor/resource.c
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@ -124,7 +124,7 @@ int aa_task_setrlimit(struct aa_label *label, struct task_struct *task,
*/ */
if (label != peer && if (label != peer &&
!aa_capable(label, CAP_SYS_RESOURCE, SECURITY_CAP_NOAUDIT)) aa_capable(label, CAP_SYS_RESOURCE, SECURITY_CAP_NOAUDIT) != 0)
error = fn_for_each(label, profile, error = fn_for_each(label, profile,
audit_resource(profile, resource, audit_resource(profile, resource,
new_rlim->rlim_max, peer, new_rlim->rlim_max, peer,