https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sat, 10 Oct 2026 07:56:22 +0000 https://cve.radiocsirt.org/vuln/cve-2025-22126 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>md: fix mddev uaf while iterating all_mddevs list</p> <p>While iterating all_mddevs list from md_notify_reboot() and md_exit(), list_for_each_entry_safe is used, and this can race with deletint the next mddev, causing UAF:</p> <p>t1: spin_lock //list_for_each_entry_safe(mddev, n, ...) mddev_get(mddev1) // assume mddev2 is the next entry spin_unlock t2: //remove mddev2 ... mddev_free spin_lock list_del spin_unlock kfree(mddev2) mddev_put(mddev1) spin_lock //continue dereference mddev2-&gt;all_mddevs</p> <p>The old helper for_each_mddev() actually grab the reference of mddev2 while holding the lock, to prevent from being freed. This problem can be fixed the same way, however, the code will be complex.</p> <p>Hence switch to use list_for_each_entry, in this case mddev_put() can free the mddev1 and it&#39;s not safe as well. Refer to md_seq_show(), also factor out a helper mddev_put_locked() to fix this problem.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>md: fix mddev uaf while iterating all_mddevs list</p> <p>While iterating all_mddevs list from md_notify_reboot() and md_exit(), list_for_each_entry_safe is used, and this can race with deletint the next mddev, causing UAF:</p> <p>t1: spin_lock //list_for_each_entry_safe(mddev, n, ...) mddev_get(mddev1) // assume mddev2 is the next entry spin_unlock t2: //remove mddev2 ... mddev_free spin_lock list_del spin_unlock kfree(mddev2) mddev_put(mddev1) spin_lock //continue dereference mddev2-&gt;all_mddevs</p> <p>The old helper for_each_mddev() actually grab the reference of mddev2 while holding the lock, to prevent from being freed. This problem can be fixed the same way, however, the code will be complex.</p> <p>Hence switch to use list_for_each_entry, in this case mddev_put() can free the mddev1 and it&#39;s not safe as well. Refer to md_seq_show(), also factor out a helper mddev_put_locked() to fix this problem.</p> https://cve.radiocsirt.org/vuln/cve-2025-22126