Vulnerability details
CVE-2026-46174
Linux LinuxSiemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFPSiemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPSiemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache
CVSS 3.1
8.8High
Official 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 scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.8High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 4.14 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 4ba461d426490b6ed7e8298c4d3b7a13aa5d2686 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 5a63725cd18fcee2af6ec46ccb856b64ad3077b4 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 5abd1583e06b3963e5c9d915760367de86808b78 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 3.16.58 ≤ v < 3.17 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 4.4.144 ≤ v < 4.5 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 4.9.102 ≤ v < 4.10 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 ≤ v < 1e23b30a80b14e5764657401ee2cca030525ae8e | CVEProject cvelistV5 (CNA) |
| Linux | Linux | f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 ≤ v < c21b90f77687075115d989e53a8ec5e2bb427ab1 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 ≤ v < f5bc3aef7df46eaaf423d7413ab8833f704ae576 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 ≤ v < 251497955f2314cd39d43191e81c6151dead4c7b | CVEProject cvelistV5 (CNA) |
| Linux | Linux | f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 ≤ v < ff6fc65b3bf73acc5ee71919154d830ad5431362 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 ≤ v < 9109489cc8c34e50d15575a3d1ff82af586bc1aa | CVEProject cvelistV5 (CNA) |
| Linux | Linux | f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 ≤ v < 28f5ed477eef166d678d6966762cbc1de9b4f436 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 ≤ v < 1cd85a19748b2407830376a5cbae5c0f126016e5 | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.5 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.5 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.6 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.6 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.7 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.7 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.5 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.5 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.6 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.6 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.7 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.7 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | V3.1.5 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | V3.1.6 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | V3.1.7 ≤ v | CVEProject cvelistV5 (CNA) |
References and advisories
11- https://git.kernel.org/stable/c/1e23b30a80b14e5764657401ee2cca030525ae8e
- https://git.kernel.org/stable/c/f5bc3aef7df46eaaf423d7413ab8833f704ae576
- https://git.kernel.org/stable/c/251497955f2314cd39d43191e81c6151dead4c7b
- https://git.kernel.org/stable/c/ff6fc65b3bf73acc5ee71919154d830ad5431362
- https://git.kernel.org/stable/c/9109489cc8c34e50d15575a3d1ff82af586bc1aa
- https://git.kernel.org/stable/c/28f5ed477eef166d678d6966762cbc1de9b4f436
- https://git.kernel.org/stable/c/1cd85a19748b2407830376a5cbae5c0f126016e5
- https://git.kernel.org/stable/c/c21b90f77687075115d989e53a8ec5e2bb427ab1
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
Kolun on Telegram @kolunsec
Exploited CVEs, key news and a daily digest
Alerts for this product's next CVEsFollow the product to get new vulnerabilities on Telegram.
Details
- Published
- 2026-05-28
- Last updated
- 2026-10-19
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.15%
Probability of exploitation in 30 days
4.4%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-862Missing Authorization