CVE-2026-31431

7.8

HIGHCVSS v3.1 Base Score

2.23%

LOW RiskEPSS (85th percentile)

KEV

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.

Published: 4/22/2026

Modified: 5/21/2026

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ACTIVELY EXPLOITED IN THE WILD

This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability Name:

Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability

Vendor / Product:

Linux Kernel

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.

Due Date: 5/15/2026(OVERDUE)

Added to KEV:

5/1/2026

Notes:

https://lore.kernel.org/linux-cve-announce/2026042214-CVE-2026-31431-3d65@gregkh/; https://xint.io/blog/copy-fail-linux-distributions#the-fix-6 ; https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/about/ ; https://nvd.nist.gov/vuln/detail/CVE-2026-31431

View CISA KEV Catalog

Vulnerability Summary

CVSS v3 Score

7.8HIGH

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

EPSS Score (Exploitation Probability)

2.23%LOW Exploitation Risk

85th percentile

This vulnerability has a 2.23% probability of being exploited in the next 30 days, ranking higher than 85% of all scored CVEs.

CWE Classification

CWE-669

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Same Weakness Type(CWE-669)

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