CVE-2021-28688 (GCVE-0-2021-28688)

Vulnerability from cvelistv5 – Published: 2021-04-06 18:07 – Updated: 2024-08-03 21:47
VLAI?
Summary
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.
Severity ?
No CVSS data available.
CWE
  • unknown
Assigner
XEN
References
Impacted products
Vendor Product Version
Linux Linux Unknown: unspecified , < 4.12 (custom)
Affected: 3.11 , < unspecified (custom)
Unaffected: next of 4.3 , < unspecified (custom)
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    Linux Linux Affected: 5.11.1
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    Linux Linux Affected: 5.12-rc
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    Linux Linux Affected: 5.10.18
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    Linux Linux Unknown: unspecified , < 4.12 (custom)
Unknown: 4.4 , < unspecified (custom)
Unaffected: next of 5.9 , < unspecified (custom)
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Credits
{'credit_data': {'description': {'description_data': [{'lang': 'eng', 'value': 'This issue was discovered by Nicolai Stange of SUSE.'}]}}}
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