01 Record

CVE-2026-46174

x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache

HighPUBLISHEDCNA: Linux

CNA base score8.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

View raw JSON

02 Description

x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache

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: 0.14% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 3.4% of scored records. A rank, not a probability.
NVD base score: 8.8 (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:C/C:H/I:H/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-07-14.
Red Hat severity: Important. 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

2026-05-28 09:36Z3 MO AGO

Last updated

2026-08-05 12:30Z1 MO AGO

Reserved

2026-05-13

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

CWE-653Improper Isolation or CompartmentalizationClass

Data version

5.2

Document digest

04f08d8b96822bb5b69567b9f98e2f736ecb9f9ae26a99a9281aa805d401f199

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxf7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 to < 1e23b30a80b14e5764657401ee2cca030525ae8e, f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 to < f5bc3aef7df46eaaf423d7413ab8833f704ae576, f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 to < 251497955f2314cd39d43191e81c6151dead4c7b, f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 to < ff6fc65b3bf73acc5ee71919154d830ad5431362, f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 to < 9109489cc8c34e50d15575a3d1ff82af586bc1aa, f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 to < 28f5ed477eef166d678d6966762cbc1de9b4f436, f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 to < 1cd85a19748b2407830376a5cbae5c0f126016e5, f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 to < c21b90f77687075115d989e53a8ec5e2bb427ab1, 5abd1583e06b3963e5c9d915760367de86808b78, 4ba461d426490b6ed7e8298c4d3b7a13aa5d2686, 5a63725cd18fcee2af6ec46ccb856b64ad3077b4, 3.16.58 to < 3.17, 4.4.144 to < 4.5, 4.9.102 to < 4.10, 4.14—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/1e23b30a80b14e5764657401ee2cca030525ae8e
git.kernel.orghttps://git.kernel.org/stable/c/f5bc3aef7df46eaaf423d7413ab8833f704ae576
git.kernel.orghttps://git.kernel.org/stable/c/251497955f2314cd39d43191e81c6151dead4c7b
git.kernel.orghttps://git.kernel.org/stable/c/ff6fc65b3bf73acc5ee71919154d830ad5431362
git.kernel.orghttps://git.kernel.org/stable/c/9109489cc8c34e50d15575a3d1ff82af586bc1aa
git.kernel.orghttps://git.kernel.org/stable/c/28f5ed477eef166d678d6966762cbc1de9b4f436
git.kernel.orghttps://git.kernel.org/stable/c/1cd85a19748b2407830376a5cbae5c0f126016e5
git.kernel.orghttps://git.kernel.org/stable/c/c21b90f77687075115d989e53a8ec5e2bb427ab1
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-019113.html

01 Record index

CVE-2026-46174

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-46174

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References