diff options
| author | Nicholas Bishop | 2023-05-12 19:43:02 +0000 |
|---|---|---|
| committer | Ard Biesheuvel | 2023-06-06 15:33:59 +0200 |
| commit | d0a1865cf7e2211d9227592ef4141f4632e33908 (patch) | |
| tree | e2e6846a539db7f47aac98612d6cff1fd18ced9d /drivers/firmware | |
| parent | d86ff3333cb1d5f42d8898fb5fdb304e143c0237 (diff) | |
efi/esrt: Allow ESRT access without CAP_SYS_ADMIN
Access to the files in /sys/firmware/efi/esrt has been restricted to
CAP_SYS_ADMIN since support for ESRT was added, but this seems overly
restrictive given that the files are read-only and just provide
information about UEFI firmware updates.
Remove the CAP_SYS_ADMIN restriction so that a non-root process can read
the files, provided a suitably-privileged process changes the file
ownership first. The files are still read-only and still owned by root
by default.
Signed-off-by: Nicholas Bishop <nicholasbishop@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/efi/esrt.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/firmware/efi/esrt.c b/drivers/firmware/efi/esrt.c index c61398634d75..7a81c0ce4780 100644 --- a/drivers/firmware/efi/esrt.c +++ b/drivers/firmware/efi/esrt.c @@ -95,10 +95,6 @@ static ssize_t esre_attr_show(struct kobject *kobj, struct esre_entry *entry = to_entry(kobj); struct esre_attribute *attr = to_attr(_attr); - /* Don't tell normal users what firmware versions we've got... */ - if (!capable(CAP_SYS_ADMIN)) - return -EACCES; - return attr->show(entry, buf); } |