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Allow mounting FUSE filesystems without CAP_SYS_ADMIN or AppArmor/SecComp custom profiles #41880

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Allow mounting FUSE filesystems without CAP_SYS_ADMIN or AppArmor/SecComp custom profiles #41880

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66153c6
seccomp: add necessary syscalls for mount.fuse
t0rr3sp3dr0 Jan 14, 2021
5a0d58f
apparmor: allow mounting fuse filesystems
t0rr3sp3dr0 Jan 14, 2021
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3 changes: 2 additions & 1 deletion profiles/apparmor/template.go
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Expand Up @@ -40,7 +40,8 @@ profile {{.Name}} flags=(attach_disconnected,mediate_deleted) {
deny @{PROC}/sysrq-trigger rwklx,
deny @{PROC}/kcore rwklx,

deny mount,
mount fstype=fuse,
mount fstype=fuse.*,

deny /sys/[^f]*/** wklx,
deny /sys/f[^s]*/** wklx,
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10 changes: 5 additions & 5 deletions profiles/seccomp/default.json
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Expand Up @@ -207,6 +207,7 @@
"mlockall",
"mmap",
"mmap2",
"mount",
"mprotect",
"mq_getsetattr",
"mq_notify",
Expand Down Expand Up @@ -376,9 +377,12 @@
"truncate64",
"ugetrlimit",
"umask",
"umount",
"umount2",
"uname",
"unlink",
"unlinkat",
"unshare",
"utime",
"utimensat",
"utimensat_time64",
Expand Down Expand Up @@ -591,17 +595,13 @@
"clone",
"fanotify_init",
"lookup_dcookie",
"mount",
"name_to_handle_at",
"perf_event_open",
"quotactl",
"setdomainname",
"sethostname",
"setns",
"syslog",
"umount",
"umount2",
"unshare"
"syslog"
],
"action": "SCMP_ACT_ALLOW",
"args": [],
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8 changes: 4 additions & 4 deletions profiles/seccomp/default_linux.go
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Expand Up @@ -200,6 +200,7 @@ func DefaultProfile() *Seccomp {
"mlockall",
"mmap",
"mmap2",
"mount",
"mprotect",
"mq_getsetattr",
"mq_notify",
Expand Down Expand Up @@ -369,9 +370,12 @@ func DefaultProfile() *Seccomp {
"truncate64",
"ugetrlimit",
"umask",
"umount",
"umount2",
"uname",
"unlink",
"unlinkat",
"unshare",
"utime",
"utimensat",
"utimensat_time64",
Expand Down Expand Up @@ -522,17 +526,13 @@ func DefaultProfile() *Seccomp {
"clone",
"fanotify_init",
"lookup_dcookie",
"mount",
"name_to_handle_at",
"perf_event_open",
"quotactl",
"setdomainname",
"sethostname",
"setns",
"syslog",
"umount",
"umount2",
"unshare",
},
Action: specs.ActAllow,
Args: []*specs.LinuxSeccompArg{},
Expand Down