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CVE-2022-26365

7.1 · HIGH

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 devic…

Published Jul 5, 2022CWE-401EPSS 0.33%

Overview

CVE-2022-26365 is a high-severity vulnerability. It was published on July 5, 2022 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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).

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.openwall.com/lists/oss-security/2022/07/05/6Refxenbits.xen.org/xsa/advisory-403.htmlReflists.debian.org/debian-lts-announce/2022/10/msg00000.htmlReflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGFTRZ66KQYTSYIRT5FRHF5D6O72NWOP/Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/Refwww.debian.org/security/2022/dsa-5191Refxenbits.xenproject.org/xsa/advisory-403.txtRefwww.openwall.com/lists/oss-security/2022/07/05/6Refxenbits.xen.org/xsa/advisory-403.htmlReflists.debian.org/debian-lts-announce/2022/10/msg00000.html

How CyberStrike helps

Frequently asked questions

What is CVE-2022-26365?

CVE-2022-26365 is a high-severity vulnerability. It was published on July 5, 2022 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2022-26365?

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-26365?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-26365?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-26365 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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