01 Record

CVE-2026-31590

KVM: SEV: Drop WARN on large size for KVM_MEMORY_ENCRYPT_REG_REGION

UnratedPUBLISHEDCNA: Linux

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

KVM: SEV: Drop WARN on large size for KVM_MEMORY_ENCRYPT_REG_REGION

03 Exploitation and scoring

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: 0.13% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 2.6% of scored records. A rank, not a probability.
NVD base score: 5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: Moderate. Red Hat's rating for its own products, not a CVSS rating.

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.

04 Metadata

Published

2026-04-24 14:42Z4 MO AGO

Last updated

2026-06-14 17:42Z2 MO AGO

Reserved

2026-03-09

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-190Integer Overflow or WraparoundBase

Data version

5.2

Document digest

75ec773eb22e679e3d3bbe65678ec69ed34ae0cdda19778d497998be6168d198

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux78824fabc72e5e37d51e6e567fde70a4fc41a6d7 to < 6a8e3c82122737529b25ef2a048fbcc569d8c055, 78824fabc72e5e37d51e6e567fde70a4fc41a6d7 to < a703933bcfa5cc76ca10e2048464600e74136099, 78824fabc72e5e37d51e6e567fde70a4fc41a6d7 to < abcd43ff579abd0a654bb4636086e78819dd5f4c, 78824fabc72e5e37d51e6e567fde70a4fc41a6d7 to < b670833749ffd8681361db2bb047c6f2e3075f3a, 78824fabc72e5e37d51e6e567fde70a4fc41a6d7 to < ab423e5892826202a660b5ac85d1125b0e8301a5, 78824fabc72e5e37d51e6e567fde70a4fc41a6d7 to < 28cc13ca20431b127d42d84ba10898d03e2c8267, 78824fabc72e5e37d51e6e567fde70a4fc41a6d7 to < c29ff288a2d97a6f4640a498a367cf0eb91312eb, 78824fabc72e5e37d51e6e567fde70a4fc41a6d7 to < 1cba4dcd795daf6d257122779fb6a349edf03914, 78824fabc72e5e37d51e6e567fde70a4fc41a6d7 to < 8acffeef5ef720c35e513e322ab08e32683f32f2, 5.9—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/6a8e3c82122737529b25ef2a048fbcc569d8c055
git.kernel.orghttps://git.kernel.org/stable/c/a703933bcfa5cc76ca10e2048464600e74136099
git.kernel.orghttps://git.kernel.org/stable/c/abcd43ff579abd0a654bb4636086e78819dd5f4c
git.kernel.orghttps://git.kernel.org/stable/c/b670833749ffd8681361db2bb047c6f2e3075f3a
git.kernel.orghttps://git.kernel.org/stable/c/ab423e5892826202a660b5ac85d1125b0e8301a5
git.kernel.orghttps://git.kernel.org/stable/c/28cc13ca20431b127d42d84ba10898d03e2c8267
git.kernel.orghttps://git.kernel.org/stable/c/c29ff288a2d97a6f4640a498a367cf0eb91312eb
git.kernel.orghttps://git.kernel.org/stable/c/1cba4dcd795daf6d257122779fb6a349edf03914
git.kernel.orghttps://git.kernel.org/stable/c/8acffeef5ef720c35e513e322ab08e32683f32f2

01 Record index

CVE-2026-31590

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-31590

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References