diff options
| author | Vladis Dronov <vdronov@redhat.com> | 2020-03-08 09:08:55 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-03-08 09:56:48 +0100 |
| commit | d6c066fda90d578aacdf19771a027ed484a79825 (patch) | |
| tree | ab96a2e295bc607151712dc103f5b1137f25e439 /drivers/firmware/efi/efivars.c | |
| parent | efi: Fix a race and a buffer overflow while reading efivars via sysfs (diff) | |
| download | linux-d6c066fda90d578aacdf19771a027ed484a79825.tar.xz linux-d6c066fda90d578aacdf19771a027ed484a79825.zip | |
efi: Add a sanity check to efivar_store_raw()
Add a sanity check to efivar_store_raw() the same way
efivar_{attr,size,data}_read() and efivar_show_raw() have it.
Signed-off-by: Vladis Dronov <vdronov@redhat.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200305084041.24053-3-vdronov@redhat.com
Link: https://lore.kernel.org/r/20200308080859.21568-25-ardb@kernel.org
Diffstat (limited to 'drivers/firmware/efi/efivars.c')
| -rw-r--r-- | drivers/firmware/efi/efivars.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/firmware/efi/efivars.c b/drivers/firmware/efi/efivars.c index 69f13bc4b931..aff3dfb4d7ba 100644 --- a/drivers/firmware/efi/efivars.c +++ b/drivers/firmware/efi/efivars.c @@ -208,6 +208,9 @@ efivar_store_raw(struct efivar_entry *entry, const char *buf, size_t count) u8 *data; int err; + if (!entry || !buf) + return -EINVAL; + if (in_compat_syscall()) { struct compat_efi_variable *compat; |