From: Pierre-Eric Pelloux-Prayer pierre-eric.pelloux-prayer@amd.com

commit 6fb15dcbcf4f212930350eaee174bb60ed40a536 upstream.

The call to radeon_vm_clear_freed might clear bo_va->bo, so we have to check it before dereferencing it.

Signed-off-by: Pierre-Eric Pelloux-Prayer pierre-eric.pelloux-prayer@amd.com Acked-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com [Denis: minor fix to resolve merge conflict.] Signed-off-by: Denis Arefev arefev@swemel.ru --- Backport fix CVE-2024-41060 Link: https://nvd.nist.gov/vuln/detail/CVE-2024-41060 --- drivers/gpu/drm/radeon/radeon_gem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c index 75053917d213..51b6f38b5c47 100644 --- a/drivers/gpu/drm/radeon/radeon_gem.c +++ b/drivers/gpu/drm/radeon/radeon_gem.c @@ -582,7 +582,7 @@ static void radeon_gem_va_update_vm(struct radeon_device *rdev, if (r) goto error_unlock;

- if (bo_va->it.start) + if (bo_va->it.start && bo_va->bo) r = radeon_vm_bo_update(rdev, bo_va, &bo_va->bo->tbo.mem);

error_unlock: