VULNpocalypse

CVE-2026-31431: Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability

Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.

Generated by VEDAS. Scores as of 2026-11-01 19:19 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.

What it is

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.

Description quoted from the CVE record (assigned by Linux, published 2026-04-22).

Weakness: CWE-669 Incorrect Resource Transfer Between Spheres; Improper Validation of Consistency within Input

How it can be exploited

Exploitable with local access with low attack complexity needing low privileges and no user interaction. Impact: confidentiality high, integrity high, availability high. CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA assessment (SSVC): CISA assesses exploitation as active. Automatable: no. Technical impact: total.

On CISA KEV since
2026-05-01
US federal deadline
2026-05-15
Ransomware use
Not known

Public exploit evidence (Exploit Observer)

Also known as: BDU:2026-06123, CNVD-2026-19044, EDB-52573, EUVD-2026-24639, GHSA-2274-3hgr-wxv6, GHSA-m38g-vww2-mvgx

VEDAS cluster: VEDAS:AUTUMNVISION

Exploit Observer links 268 pieces of public exploit code or detection modules that name this CVE or one of its aliases.

Exploit code and modules (268)

Code that names this CVE. A repository can be a working exploit, a scanner, a fake or malware; read it before running anything.

Research and write-ups (2)

Vulnerability databases and vendor advisories (20)

Catalogue entries, not exploit evidence.

529 more references returned by Exploit Observer did not name this CVE or an alias, so they are left out.

VEDAS data as of 2026-11-01T17:12 UTC; fetched 2026-11-02.

Live scores

EPSS
0.981
very likely to be attacked soon
VEDAS
0.987
strong exploit evidence
On CISA KEV
Yes, since 2026-05-01
Detection rule
Out of scope (local)
EPSS (chance of attack)
100.1CVE-2026-31431 EPSS over time2026-082026-11-01
VEDAS (exploit evidence)
100.9CVE-2026-31431 VEDAS over time2026-082026-11-01

Thin horizontal line: the “likely” (EPSS 0.10) or “strong” (VEDAS 0.90) threshold. Shaded “no data” areas are periods when cve-scores did not publish.

Who is affected

ProductAffectedNot affected
Linux Linuxfrom 72548b093ee3 before 893d22e0135f (git commit)
from 72548b093ee3 before 19d43105a97b (git commit)
from 72548b093ee3 before 961cfa271a91 (git commit)
from 72548b093ee3 before 3115af9644c3 (git commit)
from 72548b093ee3 before 8b88d99341f1 (git commit)
from 72548b093ee3 before fafe0fa2995a (git commit)
from 72548b093ee3 before ce42ee423e58 (git commit)
from 72548b093ee3 before a664bf3d603d (git commit)		Not stated
Linux Linuxversion 4.140 is not affected (up to 4.14); 5.10.254 is not affected; 5.15.204 is not affected; 6.1.170 is not affected

Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.

Exploit Observer also maps it to: amazon amazon_linux, canonical ubuntu_linux, debian debian_linux, linux linux_kernel, redhat enterprise_linux, redhat enterprise_linux_aus, redhat enterprise_linux_eus, redhat enterprise_linux_tus, redhat enterprise_linux_update_services_for_sap_solutions, suse linux_enterprise_desktop.

How to fix it

CISA required action: “Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Vendor guidance:

31 more

How to detect it

This bug needs local access to exploit. VEDAS signatures cover remotely exploitable bugs for now, so there is no network rule or remote check for it. Patch it and watch your endpoint telemetry for unusual local activity.

Advisories on this CVE

References

Vendor advisories and patches

27 more

Exploits and technical analysis

Government sources

Other references

73 more

Other databases

Where this comes from

This advisory is generated automatically by VEDAS from: CVE.org record, CISA KEV, cve-scores (EPSS and VEDAS), Exploit Observer. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.