CVE-2022-33742 (GCVE-0-2022-33742)

Vulnerability from cvelistv5 – Published: 2022-07-05 12:50 – Updated: 2024-08-03 08:09
VLAI?
Summary
Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740). Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend (CVE-2022-33741, CVE-2022-33742).
Severity ?
No CVSS data available.
CWE
  • unknown
Assigner
XEN
References
Impacted products
Vendor Product Version
Linux Linux Unknown: consult Xen advisory XSA-403
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    Xen xen Unknown: consult Xen advisory XSA-403
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Credits
{'credit_data': {'description': {'description_data': [{'lang': 'eng', 'value': 'The issue related to not zeroing memory areas used for shared communications\nwas discovered by Roger Pau Monné of Citrix.\n\nThe issue related to leaking contiguous data in granted pages was disclosed\npublicly.'}]}}}
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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