Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 29c2680fd2bf3862ff5cf2957f198512493156f9 before 026499a9c2e002e621ad568d1378324ae97e5524; affected 29c2680fd2bf3862ff5cf2957f198512493156f9 before 055a063a18bcd19b93709e3eac8078d6b2f04599; affected 29c2680fd2bf3862ff5cf2957f198512493156f9 before 971dc8706cee47393d393905d294ea47e39503d3; affected 29c2680fd2bf3862ff5cf2957f198512493156f9 before 70fac8088cfad9f3b379c9082832b4d7532c16c2 |
| Linux / Linux | affected 5.10; unaffected 0 before 5.10; unaffected 5.10.36 through 5.10.*; unaffected 5.11.20 through 5.11.*; unaffected 5.12.3 through 5.12.*; unaffected 5.13 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/026499a9c2e002e621ad568d1378324ae97e5524
- https://git.kernel.org/stable/c/055a063a18bcd19b93709e3eac8078d6b2f04599
- https://git.kernel.org/stable/c/971dc8706cee47393d393905d294ea47e39503d3
- https://git.kernel.org/stable/c/70fac8088cfad9f3b379c9082832b4d7532c16c2
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.