922517 – sec-policy/selinux-zfs: missing allow rule on zfs compatibility file

Bug 922517 - sec-policy/selinux-zfs: missing allow rule on zfs compatibility file

Summary: sec-policy/selinux-zfs: missing allow rule on zfs compatibility file

Status:	CONFIRMED

Alias:	None

Product:	Gentoo Linux
Classification:	Unclassified
Component:	SELinux (show other bugs)
Hardware:	All Linux

Importance:	Normal normal
Assignee:	SE Linux Bugs

URL:
Whiteboard:
Keywords:

Depends on:
Blocks:

Reported:	2024-01-20 01:39 UTC by Marc Schiffbauer
Modified:	2024-01-20 16:22 UTC (History)
CC List:	1 user (show)

See Also:
Package list:
Runtime testing required:	---

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.

Description Marc Schiffbauer gentoo-dev

2024-01-20 01:39:34 UTC

If you have set a compatibility property on a zfs pool, it needs read access to the configured compatibilty file like:

# ls -lZ /usr/share/zfs/compatibility.d/openzfs-2.2-linux /usr/share/zfs/compatibility.d/openzfs-2.2
-rw-r--r--. 1 root root system_u:object_r:usr_t 584 Jan 11 03:05 /usr/share/zfs/compatibility.d/openzfs-2.2
lrwxrwxrwx. 1 root root system_u:object_r:usr_t  11 Jan 11 03:05 /usr/share/zfs/compatibility.d/openzfs-2.2-linux -> openzfs-2.2

This fixed it for me (requires reading symlinks and mmapping regular files):

gen_require(`
        type zfs_t;
        type usr_t;
')

# for reading compatibility file
read_lnk_files_pattern(zfs_t,usr_t,usr_t)
mmap_read_files_pattern(zfs_t,usr_t,usr_t)