CVE-2024-27009
Description
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.
How to fix
- linux linux_kernel5.15.157, 6.1.88, 6.6.29, 6.8.8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.15 ≤ v < 5.15.157, 5.16 ≤ v < 6.1.88, 6.2 ≤ v < 6.6.29, 6.7 ≤ v < 6.8.8, 6.9 | 5.15.157, 6.1.88, 6.6.29, 6.8.8 |
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