CVE - CVE-2021-46968

CVE-ID
CVE-2021-46968	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/026499a9c2e002e621ad568d1378324ae97e5524 URL:https://git.kernel.org/stable/c/026499a9c2e002e621ad568d1378324ae97e5524 MISC:https://git.kernel.org/stable/c/055a063a18bcd19b93709e3eac8078d6b2f04599 URL:https://git.kernel.org/stable/c/055a063a18bcd19b93709e3eac8078d6b2f04599 MISC:https://git.kernel.org/stable/c/70fac8088cfad9f3b379c9082832b4d7532c16c2 URL:https://git.kernel.org/stable/c/70fac8088cfad9f3b379c9082832b4d7532c16c2 MISC:https://git.kernel.org/stable/c/971dc8706cee47393d393905d294ea47e39503d3 URL:https://git.kernel.org/stable/c/971dc8706cee47393d393905d294ea47e39503d3
Assigning CNA
kernel.org
Date Record Created
20240227	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240227)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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