CVE-2026-46174
Analyzed Analyzed - Analysis Complete
AMD Zen2 Op Cache Resource Isolation Flaw

Publication date: 2026-05-28

Last updated on: 2026-06-10

Assigner: kernel.org

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.
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Meta Information
Published
2026-05-28
Last Modified
2026-06-10
Generated
2026-06-17
AI Q&A
2026-05-28
EPSS Evaluated
2026-06-16
NVD
CVE-2026-46174
EUVD
EUVD-2026-32801
Affected Vendors & Products
Showing 21 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 3.16.58 (inc) to 3.17 (exc)
linux linux_kernel 4.14
linux linux_kernel 4.14
linux linux_kernel 4.14
linux linux_kernel 4.14
linux linux_kernel 4.14
linux linux_kernel 4.14
linux linux_kernel 4.14
linux linux_kernel 4.14
linux linux_kernel From 4.4.144 (inc) to 4.5 (exc)
linux linux_kernel From 4.9.102 (inc) to 4.10 (exc)
linux linux_kernel 7.1
linux linux_kernel 7.1
linux linux_kernel 7.1
linux linux_kernel From 6.13 (inc) to 6.18.30 (exc)
linux linux_kernel From 6.19 (inc) to 7.0.7 (exc)
linux linux_kernel From 6.7 (inc) to 6.12.88 (exc)
linux linux_kernel From 4.14.1 (inc) to 5.10.256 (exc)
linux linux_kernel From 5.11 (inc) to 5.15.207 (exc)
linux linux_kernel From 5.16 (inc) to 6.1.173 (exc)
linux linux_kernel From 6.2 (inc) to 6.6.139 (exc)
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Exploitability
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability exists in the Linux kernel specifically related to the x86 CPU architecture for AMD processors using the Zen2 microarchitecture. It involves improper isolation of shared resources in the operation (op) cache. Due to this improper isolation, resources in the op cache could be shared incorrectly, which may lead to instruction corruption.

Impact Analysis

The impact of this vulnerability is that improper sharing of resources in the op cache can cause instruction corruption. This could potentially lead to unpredictable behavior of the system, including crashes, incorrect execution of instructions, or security issues arising from corrupted instructions.

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