Description
In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: fix zcard and zqueue hot-unplug memleak Tests with kvm and a kmemdebug kernel showed, that on hot unplug the zcard and zqueue structs for the unplugged card or queue are not properly freed because of a mismatch with get/put for the embedded kref counter. This fix now adjusts the handling of the kref counters. With init the kref counter starts with 1. This initial value needs to drop to zero with the unregister of the card or queue to trigger the release and free the object.
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
29c2680fd2bf3862ff5cf2957f198512493156f9 to < 026499a9c2e002e621ad568d1378324ae97e5524affected29c2680fd2bf3862ff5cf2957f198512493156f9 to < 055a063a18bcd19b93709e3eac8078d6b2f04599affected29c2680fd2bf3862ff5cf2957f198512493156f9 to < 971dc8706cee47393d393905d294ea47e39503d3affected29c2680fd2bf3862ff5cf2957f198512493156f9 to < 70fac8088cfad9f3b379c9082832b4d7532c16c2affected
Linux Linux
Default version status: affected
5.10affected0 to < 5.10unaffected5.10.36 to ≤ 5.10.*unaffected5.11.20 to ≤ 5.11.*unaffected5.12.3 to ≤ 5.12.*unaffected5.13 to ≤ *unaffected