CVE-2026-31431

HighCVSS 7.8/10Known exploited (CISA KEV)Last modified Nov 11, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

crypto: algif_aead - Revert to operating out-of-place

This mostly reverts commit 72548b093ee3 except for the copying of the associated data.

There is no benefit in operating in-place in algif_aead since the source and destination come from different mappings. Get rid of all the complexity added for in-place operation and just copy the AD directly.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

VendorProductVersions
LinuxLinux>= 72548b093ee38a6d4f2a19e6ef1948ae05c181f7, < 893d22e0135fa394db81df88697fba6032747667; >= 72548b093ee38a6d4f2a19e6ef1948ae05c181f7, < 19d43105a97be0810edbda875f2cd03f30dc130c; >= 72548b093ee38a6d4f2a19e6ef1948ae05c181f7, < 961cfa271a918ad4ae452420e7c303149002875b; >= 72548b093ee38a6d4f2a19e6ef1948ae05c181f7, < 3115af9644c342b356f3f07a4dd1c8905cd9a6fc; >= 72548b093ee38a6d4f2a19e6ef1948ae05c181f7, < 8b88d99341f139e23bdeb1027a2a3ae10d341d82; >= 72548b093ee38a6d4f2a19e6ef1948ae05c181f7, < fafe0fa2995a0f7073c1c358d7d3145bcc9aedd8; >= 72548b093ee38a6d4f2a19e6ef1948ae05c181f7, < ce42ee423e58dffa5ec03524054c9d8bfd4f6237; >= 72548b093ee38a6d4f2a19e6ef1948ae05c181f7, < a664bf3d603dc3bdcf9ae47cc21e0daec706d7a5
LinuxLinux4.14
Red HatNVIDIA for RHEL 10—
Red HatRed Hat Enterprise Linux 10—
Red HatRed Hat Enterprise Linux 10.0 Extended Update Support—
Red HatRed Hat Enterprise Linux 8—
Red HatRed Hat Enterprise Linux 8—
Red HatRed Hat Enterprise Linux 8—
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support—
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On—
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support—
Red HatRed Hat Enterprise Linux 8.6 Telecommunications Update Service—
Red HatRed Hat Enterprise Linux 8.6 Update Services for SAP Solutions—
Red HatRed Hat Enterprise Linux 8.6 Update Services for SAP Solutions—
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service—
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions—
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions—
Red HatRed Hat Enterprise Linux 9—
Red HatRed Hat Enterprise Linux 9—
Red HatRed Hat Enterprise Linux 9.0 Update Services for SAP Solutions—
Red HatRed Hat Enterprise Linux 9.0 Update Services for SAP Solutions—
Red HatRed Hat Enterprise Linux 9.0 Update Services for SAP Solutions—
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions—
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions—
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions—
Red HatRed Hat Enterprise Linux 9.4 Extended Update Support—
Red HatRed Hat Enterprise Linux 9.4 Extended Update Support—
Red HatRed Hat Enterprise Linux 9.6 Extended Update Support—
Red HatRed Hat Enterprise Linux 9.6 Extended Update Support—
Red HatRed Hat OpenShift Container Platform 4.12—
Red HatRed Hat OpenShift Container Platform 4.13—
Red HatRed Hat OpenShift Container Platform 4.14—
Red HatRed Hat OpenShift Container Platform 4.15—
Red HatRed Hat OpenShift Container Platform 4.16—
Red HatRed Hat OpenShift Container Platform 4.17—
Red HatRed Hat OpenShift Container Platform 4.18—
Red HatRed Hat OpenShift Container Platform 4.19—
Red HatRed Hat OpenShift Container Platform 4.20—
Red HatRed Hat OpenShift Container Platform 4.21—
Red HatRed Hat Enterprise Linux 6—
Red HatRed Hat Enterprise Linux 7—
Red HatRed Hat Enterprise Linux 7—
SiemensSIMATIC AX Runtime Core Linux Common Debian< *
SiemensSIMATIC AX Runtime Core Linux Common Debian arm64< *
SiemensSIMATIC AX Runtime Core Linux Platform Container Common Debian Development< *
SiemensSIMATIC AX Runtime Core Linux VMWare Development< *
SiemensSIMATIC CN 4100< V6.0
SiemensSIMATIC HMI MTP1000 Unified Basic< V21 Update 2 SR1
SiemensSIMATIC HMI MTP1000 Unified Comfort Panel< V21 Update 2 SR1
SiemensSIMATIC HMI MTP1000 Unified Comfort Panel hygienic< V21 Update 2 SR1

References

Timeline

Published
Apr 22, 2026
Last modified
Nov 11, 2026
Added to CISA KEV
May 1, 2026
NVD status
Analyzed

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CVE-2026-31431: High severity, CVSS 7.8 | Vulnix