https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 29 Sep 2026 10:30:04 +0000 https://vulnerability.circl.lu/vuln/cve-2022-49313 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>drivers: usb: host: Fix deadlock in oxu_bus_suspend()</p> <p>There is a deadlock in oxu_bus_suspend(), which is shown below:</p> <p>(Thread 1) | (Thread 2) | timer_action() oxu_bus_suspend() | mod_timer() spin_lock_irq() //(1) | (wait a time) ... | oxu_watchdog() del_timer_sync() | spin_lock_irq() //(2) (wait timer to stop) | ...</p> <p>We hold oxu-&gt;lock in position (1) of thread 1, and use del_timer_sync() to wait timer to stop, but timer handler also need oxu-&gt;lock in position (2) of thread 2. As a result, oxu_bus_suspend() will block forever.</p> <p>This patch extracts del_timer_sync() from the protection of spin_lock_irq(), which could let timer handler to obtain the needed lock.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>drivers: usb: host: Fix deadlock in oxu_bus_suspend()</p> <p>There is a deadlock in oxu_bus_suspend(), which is shown below:</p> <p>(Thread 1) | (Thread 2) | timer_action() oxu_bus_suspend() | mod_timer() spin_lock_irq() //(1) | (wait a time) ... | oxu_watchdog() del_timer_sync() | spin_lock_irq() //(2) (wait timer to stop) | ...</p> <p>We hold oxu-&gt;lock in position (1) of thread 1, and use del_timer_sync() to wait timer to stop, but timer handler also need oxu-&gt;lock in position (2) of thread 2. As a result, oxu_bus_suspend() will block forever.</p> <p>This patch extracts del_timer_sync() from the protection of spin_lock_irq(), which could let timer handler to obtain the needed lock.</p> https://vulnerability.circl.lu/vuln/cve-2022-49313