Attachment 1975604 Details for Bug 2222698 – File: description

File: description

description (text/plain), 2.31 KB, created by Jan Vlug on 2023-07-13 13:47:20 UTC

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Description:

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Creator: Jan Vlug

Created: 2023-07-13 13:47:20 UTC

Size: 2.31 KB

patch

obsolete

>SELinux is preventing check from 'mmap_zero' accesses on the memprotect labeled spc_t.
>
>*****  Plugin mmap_zero (53.1 confidence) suggests   *************************
>
>If you do not think check should need to mmap low memory in the kernel.
>Then you may be under attack by a hacker, this is a very dangerous access.
>Do
>contact your security administrator and report this issue.
>
>*****  Plugin catchall_boolean (42.6 confidence) suggests   ******************
>
>If you want to allow mmap to low allowed
>Then you must tell SELinux about this by enabling the 'mmap_low_allowed' boolean.
>
>Do
>setsebool -P mmap_low_allowed 1
>
>*****  Plugin catchall (5.76 confidence) suggests   **************************
>
>If you believe that check should be allowed mmap_zero access on memprotect labeled spc_t by default.
>Then you should report this as a bug.
>You can generate a local policy module to allow this access.
>Do
>allow this access for now by executing:
># ausearch -c 'check' --raw | audit2allow -M my-check
># semodule -X 300 -i my-check.pp
>
>Additional Information:
>Source Context                system_u:system_r:spc_t:s0
>Target Context                system_u:system_r:spc_t:s0
>Target Objects                Unknown [ memprotect ]
>Source                        check
>Source Path                   check
>Port                          <Unknown>
>Host                          (removed)
>Source RPM Packages           
>Target RPM Packages           
>SELinux Policy RPM            selinux-policy-targeted-38.20-1.fc38.noarch
>Local Policy RPM              container-selinux-2.219.0-1.fc38.noarch
>Selinux Enabled               True
>Policy Type                   targeted
>Enforcing Mode                Enforcing
>Host Name                     (removed)
>Platform                      Linux (removed) 6.3.12-200.fc38.x86_64 #1 SMP
>                              PREEMPT_DYNAMIC Thu Jul 6 04:05:18 UTC 2023 x86_64
>Alert Count                   45
>First Seen                    2023-07-13 10:37:01 CEST
>Last Seen                     2023-07-13 10:37:02 CEST
>Local ID                      c3888152-0a49-459f-a1a5-dcdc53efcc4e
>
>Raw Audit Messages
>type=AVC msg=audit(1689237422.574:677): avc:  denied  { mmap_zero } for  pid=19187 comm="check" scontext=system_u:system_r:spc_t:s0 tcontext=system_u:system_r:spc_t:s0 tclass=memprotect permissive=0
>
>
>Hash: check,spc_t,spc_t,memprotect,mmap_zero

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Attachments on bug 2222698: 1975603 | 1975604