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ipc: userspace: don't fault when removing an already-sent IPC message #11157

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Merged
kv2019i merged 1 commit into from
Sep 8, 2026
Merged

ipc: userspace: don't fault when removing an already-sent IPC message #11157

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9 changes: 9 additions & 0 deletions src/ipc/ipc-common.c
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Original file line number Diff line number Diff line change
Expand Up @@ -356,6 +356,15 @@ void z_vrfy_ipc_msg_list_remove(struct ipc_msg *msg)
bool found = false;

K_OOPS(K_SYSCALL_MEMORY_WRITE(msg, sizeof(*msg)));

/*
* special case: empty list was passed. we can't trust where
* list->prev points to, so do not pass to
* z_impl_ipc_msg_list_remove(), but handle here
*/
if (list_is_empty(&msg->list))
return;

list_for_item_safe(mlist, _mlist, &ipc->msg_list) {
if (mlist == &msg->list) {
found = true;
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