Description of problem: flatpak update SELinux is preventing bwrap from 'mount' accesses on the filesystem /dev/shm. ***** Plugin catchall (100. confidence) suggests ************************** If you believe that bwrap should be allowed mount access on the shm filesystem 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 'bwrap' --raw | audit2allow -M my-bwrap # semodule -X 300 -i my-bwrap.pp Additional Information: Source Context system_u:system_r:flatpak_helper_t:s0 Target Context system_u:object_r:tmpfs_t:s0 Target Objects /dev/shm [ filesystem ] Source bwrap Source Path bwrap Port <Unknown> Host (removed) Source RPM Packages Target RPM Packages SELinux Policy RPM selinux-policy-targeted-36.6-1.fc36.noarch Local Policy RPM flatpak-selinux-1.12.7-1.fc36.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Permissive Host Name (removed) Platform Linux (removed) 5.16.16-200.fc35.x86_64 #1 SMP PREEMPT Wed Mar 23 00:44:58 CET 2022 x86_64 x86_64 Alert Count 1 First Seen 2022-04-08 22:23:47 CEST Last Seen 2022-04-08 22:23:47 CEST Local ID 15da4876-394f-4647-b2fa-ee1a9b6bece4 Raw Audit Messages type=AVC msg=audit(1649449427.691:1293): avc: denied { mount } for pid=47214 comm="bwrap" name="/" dev="tmpfs" ino=1 scontext=system_u:system_r:flatpak_helper_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=filesystem permissive=1 Hash: bwrap,flatpak_helper_t,tmpfs_t,filesystem,mount Version-Release number of selected component: selinux-policy-targeted-36.6-1.fc36.noarch Additional info: component: flatpak reporter: libreport-2.17.1 hashmarkername: setroubleshoot kernel: 5.16.16-200.fc35.x86_64 type: libreport
This looks a lot like: https://bugzilla.redhat.com/show_bug.cgi?id=2071259#c21 Hey Zdeněk! Could you please tell me how to supress this SELinux denial?
(In reply to Debarshi Ray from comment #1) > This looks a lot like: > https://bugzilla.redhat.com/show_bug.cgi?id=2071259#c21 > > Hey Zdeněk! Could you please tell me how to supress this SELinux denial? Supress the denial or allow the permissions? There is this interface: fs_mount_tmpfs() I just wonder why bwrap wants to mount /dev/shm while it should be mounted after boot.
> Supress the denial or allow the permissions? Sorry, I meant "allow the permissions". I should have probably said "avoid this SELinux denial", not "suppress".
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This bug appears to have been reported against 'rawhide' during the Fedora Linux 39 development cycle. Changing version to 39.