diff options
| author | Qiang Ma <maqianga@uniontech.com> | 2024-07-17 15:00:43 +0800 |
|---|---|---|
| committer | Ard Biesheuvel <ardb@kernel.org> | 2024-07-17 22:51:20 +0200 |
| commit | ee8b8f5d83eb2c9caaebcf633310905ee76856e9 (patch) | |
| tree | b1e319dbbce46089483e1a5687142645b7a5b796 /drivers/firmware | |
| parent | 4a2ebb082297f41803742729642961532e54079e (diff) | |
efi/libstub: Zero initialize heap allocated struct screen_info
After calling uefi interface allocate_pool to apply for memory, we
should clear 0 to prevent the possibility of using random values.
Signed-off-by: Qiang Ma <maqianga@uniontech.com>
Cc: <stable@vger.kernel.org> # v6.6+
Fixes: 732ea9db9d8a ("efi: libstub: Move screen_info handling to common code")
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/efi/libstub/screen_info.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/firmware/efi/libstub/screen_info.c b/drivers/firmware/efi/libstub/screen_info.c index a51ec201ca3c..5d3a1e32d177 100644 --- a/drivers/firmware/efi/libstub/screen_info.c +++ b/drivers/firmware/efi/libstub/screen_info.c @@ -32,6 +32,8 @@ struct screen_info *__alloc_screen_info(void) if (status != EFI_SUCCESS) return NULL; + memset(si, 0, sizeof(*si)); + status = efi_bs_call(install_configuration_table, &screen_info_guid, si); if (status == EFI_SUCCESS) |