CVE-2024-50060 Information

Description

In the Linux kernel the following vulnerability has been resolved:

io_uring: check if we need to reschedule during overflow flush

In terms of normal application usage this list will always be empty. And if an application does overflow a bit it’ll have a few entries. However nothing obviously prevents syzbot from running a test case that generates a ton of overflow entries and then flushing them can take quite a while.

Check for needing to reschedule while flushing and drop our locks and do so if necessary. There’s no state to maintain here as overflows always prune from head-of-list hence it’s fine to drop and reacquire the locks at the end of the loop.

Reference

https://git.kernel.org/stable/c/a2493904e95ce94bbec819d8f7f03b99976eb25c https://git.kernel.org/stable/c/f4ce3b5d26ce149e77e6b8e8f2058aa80e5b034e https://git.kernel.org/stable/c/c2eadeafce2d385b3f6d26a7f31fee5aba2bbbb0 https://git.kernel.org/stable/c/eac2ca2d682f94f46b1973bdf5e77d85d77b8e53