From: Srinivasan Shanmugam srinivasan.shanmugam@amd.com

stable inclusion from stable-v5.10.214 commit ff28893c96c5e0927a4da10cd24a3522ca663515 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9L9LY CVE: CVE-2024-27045

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...

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[ Upstream commit 4b09715f1504f1b6e8dff0e9643630610bc05141 ]

Tell snprintf() to store at most 10 bytes in the output buffer instead of 30.

Fixes the below: drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_debugfs.c:1508 dp_dsc_clock_en_read() error: snprintf() is printing too much 30 vs 10

Fixes: c06e09b76639 ("drm/amd/display: Add DSC parameters logging to debugfs") Cc: Alex Hung alex.hung@amd.com Cc: Qingqing Zhuo qingqing.zhuo@amd.com Cc: Rodrigo Siqueira Rodrigo.Siqueira@amd.com Cc: Aurabindo Pillai aurabindo.pillai@amd.com Cc: Alex Deucher alexander.deucher@amd.com Signed-off-by: Srinivasan Shanmugam srinivasan.shanmugam@amd.com Reviewed-by: Harry Wentland harry.wentland@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Ye Bin yebin10@huawei.com --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c index e43f82bcb231..32dbd2a27088 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c @@ -1179,7 +1179,7 @@ static ssize_t dp_dsc_clock_en_read(struct file *f, char __user *buf, const uint32_t rd_buf_size = 10; struct pipe_ctx *pipe_ctx; ssize_t result = 0; - int i, r, str_len = 30; + int i, r, str_len = 10;

rd_buf = kcalloc(rd_buf_size, sizeof(char), GFP_KERNEL);