8.8

CVE-2026-46174: linux Missing Authorization

CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2026-46174DEBIAN-CVE-2026-46174
Published 28-05-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-46174 is a high (CVSS 8.8) Missing Authorization vulnerability in linux. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7.4% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.18%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 57 · Related 57
OPENSUSE-SU-2026:10954-1OPENSUSE-SU-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23193-1SUSE-SU-2026:23194-1

Timeline

  1. 28-05-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache Make sure resources are not improperly shared in the op cache and cause instruction corruption this way.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

+0.05 pp

From 0.14% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.18%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu166 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136 | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64 | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9, < 1e23b30a80b14e5764657401ee2cca030525ae8e | ≥ f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9, < f5bc3aef7df46eaaf423d7413ab8833f704ae576 | ≥ f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9, < 251497955f2314cd39d43191e81c6151dead4c7b | ≥ f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9, < ff6fc65b3bf73acc5ee71919154d830ad5431362 | ≥ f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9, < 9109489cc8c34e50d15575a3d1ff82af586bc1aa | ≥ f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9, < 28f5ed477eef166d678d6966762cbc1de9b4f436 | ≥ f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9, < 1cd85a19748b2407830376a5cbae5c0f126016e5 | ≥ f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9, < c21b90f77687075115d989e53a8ec5e2bb427ab1 | 5abd1583e06b3963e5c9d915760367de86808b78 | 4ba461d426490b6ed7e8298c4d3b7a13aa5d2686 | 5a63725cd18fcee2af6ec46ccb856b64ad3077b4 | ≥ 3.16.58, < 3.17 | ≥ 4.4.144, < 4.5 | ≥ 4.9.102, < 4.10 | 4.14
  • linux_kernelEOL≥ 3.16.58, < 3.17 | ≥ 4.4.144, < 4.5 | ≥ 4.9.102, < 4.10 | ≥ 4.14.1, < 5.10.256 | ≥ 5.11, < 5.15.207 | ≥ 5.16, < 6.1.173 | ≥ 6.2, < 6.6.139 | ≥ 6.7, < 6.12.88 | ≥ 6.13, < 6.18.30 | ≥ 6.19, < 7.0.7 | 4.14 | 4.14:rc2 | 4.14:rc3 | 4.14:rc4 | 4.14:rc5 | 4.14:rc6 | 4.14:rc7 | 4.14:rc8 | 7.1:rc1 | 7.1:rc2 | 7.1:rc3
Debian1 product
  • linux< 6.1.174-1 | < 6.12.88-1 | < 7.0.7-1

3 vendors · 169 products

References

55 links
Show all 55 references