CVE-2026-23354

HIGH EPSS 2.9%
Published Mar 25, 20263mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Mar 25, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: x86/fred: Correct speculative safety in fred_extint() array_index_nospec() is no use if the result gets spilled to the stack, as it makes the believed safe-under-speculation value subject to memory predictions. For all practical purposes, this means array_index_nospec() must be used in the expression that accesses the array. As the code currently stands, it's the wrong side of irqentry_enter(), and 'index' is put into %ebp across the function call. Remove the index variable and reposition array_index_nospec(), so it's calculated immediately before the array access.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
2.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-129

Affected Products 11

VendorProductVersionRange
linuxlinux_kernel*≥6.9.1  –  <6.12.77
linuxlinux_kernel*≥6.13  –  <6.18.17
linuxlinux_kernel*≥6.19  –  <6.19.7
linuxlinux_kernel6.9any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 4

  • git.kernel.org https://git.kernel.org/stable/c/3bc5887b0a2b06d2d9c22f1f4f8500490b3ae643
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/92caa5274b99cb6729177232a029ce0dfa6c5f7b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/aa280a08e7d8fae58557acc345b36b3dc329d595
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e58f1a9b0677de24dcfee0b21393446ec92ff120
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/3bc5887b0a2b06d2d9c22f1f4f8500490b3ae643
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/92caa5274b99cb6729177232a029ce0dfa6c5f7b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/aa280a08e7d8fae58557acc345b36b3dc329d595
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e58f1a9b0677de24dcfee0b21393446ec92ff120
    Patch