CVE-2024-27009

In the Linux kernel, the following vulnerability has been resolved: s390/cio: fix race condition during online processing A race condition exists in ccw_device_set_online() that can cause the online process to fail, leaving the affected device in an inconsistent state. As a result, subsequent attempts to set that device online fail with return code ENODEV. The problem occurs when a path verification request arrives after a wait for final device state completed, but before the result state is evaluated. Fix this by ensuring that the CCW-device lock is held between determining final state and checking result state. Note that since: commit 2297791c92d0 ("s390/cio: dont unregister subchannel from child-drivers") path verification requests are much more likely to occur during boot, resulting in an increased chance of this race condition occurring.

• linux linux kernel (>= 5.15 < 5.15.157) • linux linux kernel (>= 5.16 < 6.1.88) • linux linux kernel (>= 6.2 < 6.6.29) • linux linux kernel (>= 6.7 < 6.8.8) • linux linux kernel 6.9