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CVE-2026-46174— x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于x86 CPU AMD Zen2操作缓存中资源隔离不当，可能导致指令损坏。

CVSS 8.8 · High EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1207 · Rogue Domain Controller

Affected Version Matrix 24

VendorProduct Version RangeStatus
Linux Linux f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9< 1e23b30a80b14e5764657401ee2cca030525ae8e affected
f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9< f5bc3aef7df46eaaf423d7413ab8833f704ae576 affected
f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9< 251497955f2314cd39d43191e81c6151dead4c7b affected
f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9< ff6fc65b3bf73acc5ee71919154d830ad5431362 affected
f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9< 9109489cc8c34e50d15575a3d1ff82af586bc1aa affected
f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9< 28f5ed477eef166d678d6966762cbc1de9b4f436 affected
f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9< 1cd85a19748b2407830376a5cbae5c0f126016e5 affected
f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9< c21b90f77687075115d989e53a8ec5e2bb427ab1 affected
… +16 more rows
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I. Basic Information for CVE-2026-46174

Vulnerability Information
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Vulnerability Title
x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于x86 CPU AMD Zen2操作缓存中资源隔离不当，可能导致指令损坏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 ~ 1e23b30a80b14e5764657401ee2cca030525ae8e -
Linux Linux 4.14 -

II. Public POCs for CVE-2026-46174

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III. Intelligence Information for CVE-2026-46174

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Patches & Fixes for CVE-2026-46174 (7)

Same Patch Batch · Linux · 2026-05-28 · 135 CVEs total

CVE-2026-46135 9.8 CRITICAL nvmet-tcp: fix race between ICReq handling and queue teardown
CVE-2026-46195 9.8 CRITICAL smb: client: validate dacloffset before building DACL pointers
CVE-2026-46137 9.8 CRITICAL mptcp: pm: ADD_ADDR rtx: fix potential data-race
CVE-2026-46115 9.8 CRITICAL block: add pgmap check to biovec_phys_mergeable
CVE-2026-46155 9.1 CRITICAL smb/client: fix out-of-bounds read in smb2_compound_op()
CVE-2026-46185 9.1 CRITICAL smb/client: fix out-of-bounds read in symlink_data()
CVE-2026-46119 9.1 CRITICAL libceph: Fix slab-out-of-bounds access in auth message processing
CVE-2026-46238 8.8 HIGH batman-adv: stop caching unowned originator pointers in BAT IV
CVE-2026-46125 8.8 HIGH wifi: mac80211: remove station if connection prep fails
CVE-2026-46198 8.8 HIGH batman-adv: fix integer overflow on buff_pos
CVE-2026-46166 8.8 HIGH wifi: mac80211: use safe list iteration in radar detect work
CVE-2026-46113 8.8 HIGH KVM: x86: Fix shadow paging use-after-free due to unexpected GFN
CVE-2026-46152 8.8 HIGH wifi: mac80211: drop stray 'static' from fast-RX rx_result
CVE-2026-46212 8.8 HIGH batman-adv: bla: prevent use-after-free when deleting claims
CVE-2026-46138 8.1 HIGH Bluetooth: hci_event: Fix OOB read and infinite loop in hci_le_create_big_complete_evt
CVE-2026-46232 8.1 HIGH HID: playstation: Clamp num_touch_reports
CVE-2026-46157 7.8 HIGH ALSA: pcm: oss: Fix data race at accessing runtime.oss.trigger
CVE-2026-46205 7.8 HIGH staging: media: atomisp: Disallow all private IOCTLs
CVE-2026-46173 7.8 HIGH exit: prevent preemption of oopsing TASK_DEAD task
CVE-2026-46227 7.8 HIGH sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL

Showing top 20 of 135 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46174

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