CVE-2026-31628

MEDIUM EPSS 2.6%
Published Apr 24, 20262mo ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Apr 24, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: x86/CPU: Fix FPDSS on Zen1 Zen1's hardware divider can leave, under certain circumstances, partial results from previous operations. Those results can be leaked by another, attacker thread. Fix that with a chicken bit.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
2.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 12

VendorProductVersionRange
linuxlinux_kernel*≥3.16.58  –  <3.17
linuxlinux_kernel*≥4.4.144  –  <4.5
linuxlinux_kernel*≥4.9.102  –  <4.10
linuxlinux_kernel*≥4.14.1  –  <5.10.253
linuxlinux_kernel*≥5.11  –  <5.15.203
linuxlinux_kernel*≥5.16  –  <6.1.169
linuxlinux_kernel*≥6.2  –  <6.6.135
linuxlinux_kernel*≥6.7  –  <6.12.82
linuxlinux_kernel*≥6.13  –  <6.18.23
linuxlinux_kernel*≥6.19  –  <6.19.13
linuxlinux_kernel*≥7.0  –  <7.0.1
linuxlinux_kernel4.14any

References 9

  • git.kernel.org https://git.kernel.org/stable/c/0548529af20e68c6552817834b766646dd3bd7a7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/1272cfedf4cd1019ddf583917a99b62f2d3645bb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/546785c719418c6166834a47e372a88f5f7ae893
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/91f02726b2203b71545713ecb7fb006e60a2d66f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ad17f07e95e6e8505e2153e5b391f0d27eacce25
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b731aca06387b195058a9f6449a03b62efa1bd10
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e55d98e7756135f32150b9b8f75d580d0d4b2dd3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e6af5286efe5a56128b34032572c9ce9ebeccda3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ed7a3a246309ccc807238f1b4f159ee6d37ff9c4
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0548529af20e68c6552817834b766646dd3bd7a7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/1272cfedf4cd1019ddf583917a99b62f2d3645bb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/546785c719418c6166834a47e372a88f5f7ae893
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/91f02726b2203b71545713ecb7fb006e60a2d66f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ad17f07e95e6e8505e2153e5b391f0d27eacce25
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b731aca06387b195058a9f6449a03b62efa1bd10
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e55d98e7756135f32150b9b8f75d580d0d4b2dd3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e6af5286efe5a56128b34032572c9ce9ebeccda3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ed7a3a246309ccc807238f1b4f159ee6d37ff9c4
    Patch