CVE-2022-26356

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.24% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 15.0% of scored records. A rank, not a probability.

NVD base score

5.6 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2022-04-05 00:00Z4 YR AGO

Last updated

2024-08-03 05:03Z2 YR AGO

Reserved

2022-03-02

Assigning CNA

XEN

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-667Improper LockingClass

Data version

5.1

Document digest

05f94173f46967e2886f0c74cd89b5fc7dca623f0a5c67d060b826134048140a

• xenbits.xenproject.orghttps://xenbits.xenproject.org/xsa/advisory-397.txt
• xenbits.xen.orghttp://xenbits.xen.org/xsa/advisory-397.html
• www.openwall.com[oss-security] 20220405 Xen Security Advisory 397 v2 (CVE-2022-26356) - Racy interactions between dirty vram tracking and paging log dirty hypercallshttp://www.openwall.com/lists/oss-security/2022/04/05/1mailing-list
• www.debian.orgDSA-5117https://www.debian.org/security/2022/dsa-5117vendor-advisory
• lists.fedoraproject.orgFEDORA-2022-dfbf7e2372https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD/vendor-advisory
• lists.fedoraproject.orgFEDORA-2022-64b2c02d29https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/vendor-advisory
• security.gentoo.orgGLSA-202402-07https://security.gentoo.org/glsa/202402-07vendor-advisory