https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 29 Sep 2026 16:52:16 +0000 https://vulnerability.circl.lu/vuln/cve-2026-90066 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-multi-modify</p> <p>ftrace_direct_multi_init() assigns kthread_run()&#39;s return value to simple_tsk without an IS_ERR() check. When kthread_run() fails it returns ERR_PTR(-ENOMEM), but init still returns 0, so the module loads with simple_tsk holding an error pointer. On unload, ftrace_direct_multi_exit() then passes that ERR_PTR to kthread_stop(), leading to a null-pointer-dereference.</p> <p>Check the return value of kthread_run() with IS_ERR(); on failure, unregister the ftrace direct call and propagate the error code.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-multi-modify</p> <p>ftrace_direct_multi_init() assigns kthread_run()&#39;s return value to simple_tsk without an IS_ERR() check. When kthread_run() fails it returns ERR_PTR(-ENOMEM), but init still returns 0, so the module loads with simple_tsk holding an error pointer. On unload, ftrace_direct_multi_exit() then passes that ERR_PTR to kthread_stop(), leading to a null-pointer-dereference.</p> <p>Check the return value of kthread_run() with IS_ERR(); on failure, unregister the ftrace direct call and propagate the error code.</p> https://vulnerability.circl.lu/vuln/cve-2026-90066