CVE - CVE-2021-28688

CVE-ID
CVE-2021-28688	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
The fix for XSA-365 includes initialization of pointers such that subsequent cleanup code wouldn't use uninitialized or stale values. This initialization went too far and may under certain conditions also overwrite pointers which are in need of cleaning up. The lack of cleanup would result in leaking persistent grants. The leak in turn would prevent fully cleaning up after a respective guest has died, leaving around zombie domains. All Linux versions having the fix for XSA-365 applied are vulnerable. XSA-365 was classified to affect versions back to at least 3.11.
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://xenbits.xenproject.org/xsa/advisory-371.txt URL:https://xenbits.xenproject.org/xsa/advisory-371.txt MLIST:[debian-lts-announce] 20210623 [SECURITY] [DLA 2689-1] linux security update URL:https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html MLIST:[debian-lts-announce] 20210623 [SECURITY] [DLA 2690-1] linux-4.19 security update URL:https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
Assigning CNA
Xen Project
Date Record Created
20210318	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 (20210318)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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