CVE-2024-38583

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> nilfs2: fix use-after-free of timer for log writer thread<br /> <br /> Patch series "nilfs2: fix log writer related issues".<br /> <br /> This bug fix series covers three nilfs2 log writer-related issues,<br /> including a timer use-after-free issue and potential deadlock issue on<br /> unmount, and a potential freeze issue in event synchronization found<br /> during their analysis. Details are described in each commit log.<br /> <br /> <br /> This patch (of 3):<br /> <br /> A use-after-free issue has been reported regarding the timer sc_timer on<br /> the nilfs_sc_info structure.<br /> <br /> The problem is that even though it is used to wake up a sleeping log<br /> writer thread, sc_timer is not shut down until the nilfs_sc_info structure<br /> is about to be freed, and is used regardless of the thread&amp;#39;s lifetime.<br /> <br /> Fix this issue by limiting the use of sc_timer only while the log writer<br /> thread is alive.