From: Zhipeng Lu <alexious@zju.edu.cn> stable inclusion from stable-v5.10.214 commit afd2a82fe300032f63f8be5d6cd6981e75f8bbf2 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9L9JK CVE: CVE-2024-27077 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- The entity->name (i.e. name) is allocated in v4l2_m2m_register_entity but isn't freed in its following error-handling paths. This patch adds such deallocation to prevent memleak of entity->name. Fixes: be2fff656322 ("media: add helpers for memory-to-memory media controller") Signed-off-by: Zhipeng Lu <alexious@zju.edu.cn> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Yipeng Zou <zouyipeng@huawei.com> --- drivers/media/v4l2-core/v4l2-mem2mem.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c index 692b0597a35c..0a9be4c5f194 100644 --- a/drivers/media/v4l2-core/v4l2-mem2mem.c +++ b/drivers/media/v4l2-core/v4l2-mem2mem.c @@ -773,11 +773,17 @@ static int v4l2_m2m_register_entity(struct media_device *mdev, entity->function = function; ret = media_entity_pads_init(entity, num_pads, pads); - if (ret) + if (ret) { + kfree(entity->name); + entity->name = NULL; return ret; + } ret = media_device_register_entity(mdev, entity); - if (ret) + if (ret) { + kfree(entity->name); + entity->name = NULL; return ret; + } return 0; } -- 2.34.1