From 89c6b28f8359621367e28e4848f8df3ffefbca07 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 21 Nov 2024 20:59:17 +0800 Subject: [PATCH] drm/amdgpu: add missing size check in stable inclusion from stable-v6.1.117 commit 25d7e84343e1235b667cf5226c3934fdf36f0df6 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IB5AT9 CVE: CVE-2024-50282 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=25d7e84343e1235b667cf5226c3934fdf36f0df6 ---------------------------------------------------------------------- commit 4d75b9468021c73108b4439794d69e892b1d24e3 upstream. Avoid a possible buffer overflow if size is larger than 4K. Reviewed-by: Yang Wang Signed-off-by: Alex Deucher (cherry picked from commit f5d873f5825b40d886d03bd2aede91d4cf002434) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman Signed-off-by: Wang Jinchao --- drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c index eef025e7282a..88d0a8d3fbbe 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c @@ -522,7 +522,7 @@ static ssize_t amdgpu_debugfs_regs_pcie_read(struct file *f, char __user *buf, ssize_t result = 0; int r; - if (size & 0x3 || *pos & 0x3) + if (size > 4096 || size & 0x3 || *pos & 0x3) return -EINVAL; r = pm_runtime_get_sync(adev_to_drm(adev)->dev); -- Gitee