SARA / Free Tools / CVE / CVE-2022-33742

CVE-2022-33742 — Linux disk/nic frontends data leaks T[his CNA information record relates to mult

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 (CV

CVSS
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EPSS
0.02% (top 94.20%)
CWE
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Published
2022-07-05T12:50:39.000Z
Last modified
2024-08-03T08:09:22.683Z
CVSS vector
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01What is this vulnerability?

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…

02Affected products

VendorProductVersions
LinuxLinuxconsult Xen advisory XSA-403
Xenxenconsult Xen advisory XSA-403

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

CVE-2022-26365
Cited in vendor advisory
CVE-2022-33740
Cited in vendor advisory

08Timeline

09References

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