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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
2297791c92d04a154ad29ba5a073f9f627982110 to < 3076b3c38a704e10df5e143c213653309d532538affected2297791c92d04a154ad29ba5a073f9f627982110 to < 559f3a6333397ab6cd4a696edd65a70b6be62c6eaffected2297791c92d04a154ad29ba5a073f9f627982110 to < 2df56f4ea769ff81e51bbb05699989603bde9c49affected2297791c92d04a154ad29ba5a073f9f627982110 to < a4234decd0fe429832ca81c4637be7248b88b49eaffected2297791c92d04a154ad29ba5a073f9f627982110 to < 2d8527f2f911fab84aec04df4788c0c23af3df48affected
Linux Linux
Default version status: affected
5.15affected0 to < 5.15unaffected5.15.157 to ≤ 5.15.*unaffected6.1.88 to ≤ 6.1.*unaffected6.6.29 to ≤ 6.6.*unaffected6.8.8 to ≤ 6.8.*unaffected6.9 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/3076b3c38a704e10df5e143c213653309d532538 ↗
- https://git.kernel.org/stable/c/559f3a6333397ab6cd4a696edd65a70b6be62c6e ↗
- https://git.kernel.org/stable/c/2df56f4ea769ff81e51bbb05699989603bde9c49 ↗
- https://git.kernel.org/stable/c/a4234decd0fe429832ca81c4637be7248b88b49e ↗
- https://git.kernel.org/stable/c/2d8527f2f911fab84aec04df4788c0c23af3df48 ↗
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/ ↗
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/ ↗
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/ ↗