From 40ac13dacd7b9bb69317bfa81928d0cf2dc48815 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 30 Jul 2024 12:19:58 +0800 Subject: [PATCH] drm/radeon: fix UBSAN warning in kv_dpm.c stable inclusion from stable-v5.10.221 commit febe794b83693257f21a23d2e03ea695a62449c8 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IACR1V CVE: CVE-2024-40988 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=febe794b83693257f21a23d2e03ea695a62449c8 -------------------------------- commit a498df5421fd737d11bfd152428ba6b1c8538321 upstream. Adds bounds check for sumo_vid_mapping_entry. Reviewed-by: Mario Limonciello Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman Signed-off-by: Kaixiong Yu --- drivers/gpu/drm/radeon/sumo_dpm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/radeon/sumo_dpm.c b/drivers/gpu/drm/radeon/sumo_dpm.c index b95d5d390caf..6bde7f119d9c 100644 --- a/drivers/gpu/drm/radeon/sumo_dpm.c +++ b/drivers/gpu/drm/radeon/sumo_dpm.c @@ -1619,6 +1619,8 @@ void sumo_construct_vid_mapping_table(struct radeon_device *rdev, for (i = 0; i < SUMO_MAX_HARDWARE_POWERLEVELS; i++) { if (table[i].ulSupportedSCLK != 0) { + if (table[i].usVoltageIndex >= SUMO_MAX_NUMBER_VOLTAGES) + continue; vid_mapping_table->entries[table[i].usVoltageIndex].vid_7bit = table[i].usVoltageID; vid_mapping_table->entries[table[i].usVoltageIndex].vid_2bit = -- Gitee