CVE-2026-31431

KEVLinux Kernel Incorrect Resource Transfer Between Spheres Vulnerability

Description

Linux Kernel contains an incorrect resource transfer between spheres vulnerability that could allow for privilege escalation.

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.

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

PublishedApr 22, 2026

Last modifiedSep 8, 2026

Added to KEVMay 1, 2026

Remediation dueMay 15, 2026

References

git.kernel.org/stable/c/19d43105a97be0810edbda875f2cd03f30dc130cPatch
git.kernel.org/stable/c/3115af9644c342b356f3f07a4dd1c8905cd9a6fcPatch
git.kernel.org/stable/c/893d22e0135fa394db81df88697fba6032747667Patch
git.kernel.org/stable/c/8b88d99341f139e23bdeb1027a2a3ae10d341d82Patch
git.kernel.org/stable/c/961cfa271a918ad4ae452420e7c303149002875bPatch
git.kernel.org/stable/c/a664bf3d603dc3bdcf9ae47cc21e0daec706d7a5Patch
git.kernel.org/stable/c/ce42ee423e58dffa5ec03524054c9d8bfd4f6237Patch
git.kernel.org/stable/c/fafe0fa2995a0f7073c1c358d7d3145bcc9aedd8Patch
openwall.com/lists/oss-security/2026/04/29/23ExploitMailing List
openwall.com/lists/oss-security/2026/04/29/25Mailing ListPatch
openwall.com/lists/oss-security/2026/04/29/26ExploitMailing List
openwall.com/lists/oss-security/2026/04/30/10Mailing ListPatch

0 recent articles mention this CVE

Risk assessment · High

Actively exploited. Patch immediately.

Exploitation: Confirmed in the wild (CISA KEV)
Federal remediation deadline: Overdue by 164 days
CVSS: 7.8 HIGH
EPSS (30-day exploit probability): 98.1% · top 1% of all CVEs
Weakness: CWE-669

Recommended actions

1."Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
2.Treat as emergency change: patch or isolate internet-facing instances first.
3.Hunt for compromise: review logs for the disclosure window, not just from the patch date.

Assessment is derived automatically from the live signals above; verify against your own asset inventory.