Vulnerability Monitor

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CVE-2022-26365

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).

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.1, requiring local system access to exploit with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), and availability (service disruption) for affected systems. Impacting 4 products from linux, from xen, from debian and 1 other, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2022, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2022-07-05T13:15:08.270

Last Modified

2024-11-21T06:53:50.423

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.1 (HIGH)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:P/I:N/A:P

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

3.9

Impact Score

4.9

Weaknesses

Type: Primary
CWE-401

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	< 4.9.322	Yes
Operating System	linux	linux_kernel	< 4.14.287	Yes
Operating System	linux	linux_kernel	< 4.19.251	Yes
Operating System	linux	linux_kernel	< 5.4.204	Yes
Operating System	linux	linux_kernel	< 5.10.129	Yes
Operating System	linux	linux_kernel	< 5.15.53	Yes
Operating System	linux	linux_kernel	< 5.18.10	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	5.19	Yes
Operating System	linux	linux_kernel	5.19	Yes
Operating System	linux	linux_kernel	5.19	Yes
Operating System	linux	linux_kernel	5.19	Yes
Operating System	linux	linux_kernel	5.19	Yes
Operating System	xen	xen	-	Yes
Operating System	debian	debian_linux	10.0	Yes
Operating System	debian	debian_linux	11.0	Yes
Operating System	fedoraproject	fedora	35	Yes
Operating System	fedoraproject	fedora	36	Yes

References

http://www.openwall.com/lists/oss-security/2022/07/05/6 Mailing List, Patch, Third Party Advisory ([email protected])
http://xenbits.xen.org/xsa/advisory-403.html Patch, Vendor Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html Mailing List, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGFTRZ66KQYTSYIRT5FRHF5D6O72NWOP/ ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/ ([email protected])
https://www.debian.org/security/2022/dsa-5191 Third Party Advisory ([email protected])
https://xenbits.xenproject.org/xsa/advisory-403.txt Vendor Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2022/07/05/6 Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://xenbits.xen.org/xsa/advisory-403.html Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGFTRZ66KQYTSYIRT5FRHF5D6O72NWOP/ (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/ (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2022/dsa-5191 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://xenbits.xenproject.org/xsa/advisory-403.txt Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For linux's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.