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Bug 2070982 - SELinux is preventing perf from using the 'bpf' capability
Summary: SELinux is preventing perf from using the 'bpf' capability
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: selinux-policy
Version: 9.0
Hardware: All
OS: Linux
medium
medium
Target Milestone: rc
: 9.1
Assignee: Zdenek Pytela
QA Contact: Milos Malik
URL:
Whiteboard:
Depends On:
Blocks: 2070983
TreeView+ depends on / blocked
 
Reported: 2022-04-01 13:54 UTC by Zdenek Pytela
Modified: 2022-11-15 12:56 UTC (History)
4 users (show)

Fixed In Version: selinux-policy-34.1.30-2.el9
Doc Type: No Doc Update
Doc Text:
Clone Of:
: 2070983 (view as bug list)
Environment:
Last Closed: 2022-11-15 11:13:17 UTC
Type: Bug
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker RHELPLAN-117641 0 None None None 2022-04-01 14:10:02 UTC
Red Hat Product Errata RHBA-2022:8283 0 None None None 2022-11-15 11:13:43 UTC

Description Zdenek Pytela 2022-04-01 13:54:12 UTC
Description of problem:
SELinux is preventing perf from using the 'bpf' capability

Version-Release number of selected component (if applicable):
selinux-policy-34.1.27-1.el9.noarch

How reproducible:
always in the /CoreOS/selinux-policy/Regression/perf_event-and-related test

Steps to Reproduce:

Actual results:
AVC denial is audited:
----
type=PROCTITLE msg=audit(04/01/2022 05:07:54.437:7828) : proctitle=perf record -o /dev/null echo test 
type=SYSCALL msg=audit(04/01/2022 05:07:54.437:7828) : arch=x86_64 syscall=bpf success=yes exit=0 a0=BPF_PROG_GET_NEXT_ID a1=0x7ffcf24e4f80 a2=0x80 a3=0x0 items=0 ppid=377113 pid=377114 auid=root uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=pts2 ses=136 comm=perf exe=/usr/bin/perf subj=sysadm_u:sysadm_r:sysadm_t:s0-s0:c0.c1023 key=(null) 
type=AVC msg=audit(04/01/2022 05:07:54.437:7828) : avc:  denied  { bpf } for  pid=377114 comm=perf capability=bpf  scontext=sysadm_u:sysadm_r:sysadm_t:s0-s0:c0.c1023 tcontext=sysadm_u:sysadm_r:sysadm_t:s0-s0:c0.c1023 tclass=capability2 permissive=0 
----

Expected results:
no denial

Additional info:

Comment 1 Zdenek Pytela 2022-04-01 13:57:41 UTC
This should be the required commit:
commit 0fa3cc8988c28c5da8b6844cdac0d052ec48dc3b
Author: Zdenek Pytela <zpytela>
Date:   Wed Jan 12 17:39:33 2022 +0100

    Allow administrative users the bpf capability

Comment 12 errata-xmlrpc 2022-11-15 11:13:17 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (selinux-policy bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2022:8283


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