From: Sakari Ailus <sakari.ailus@linux.intel.com> mainline inclusion from mainline-v6.10-rc1 commit 9537a8425a7a0222999d5839a0b394b1e8834b4a category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAB05K CVE: CVE-2024-39485 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i... -------------------------------- The notifier_entry of a notifier is not re-initialised after unregistering the notifier. This leads to dangling pointers being left there so use list_del_init() to return the notifier_entry an empty list. Fixes: b8ec754ae4c5 ("media: v4l: async: Set v4l2_device and subdev in async notifier init") Cc: <stable@vger.kernel.org> # for 6.6 and later Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Cheng Yu <serein.chengyu@huawei.com> --- drivers/media/v4l2-core/v4l2-async.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c index 8cfd593d293d..e6b9ba2c8e6e 100644 --- a/drivers/media/v4l2-core/v4l2-async.c +++ b/drivers/media/v4l2-core/v4l2-async.c @@ -639,7 +639,7 @@ __v4l2_async_nf_unregister(struct v4l2_async_notifier *notifier) v4l2_async_nf_unbind_all_subdevs(notifier); - list_del(¬ifier->notifier_entry); + list_del_init(¬ifier->notifier_entry); } void v4l2_async_nf_unregister(struct v4l2_async_notifier *notifier) -- 2.25.1