Home / Vulnerabilities / CVE-2026-31431
HIGH SEVERITY
CVE-2026-31431Linux · Kernel

Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability

Technical Severity

CVSS v3.1 Metrics

HIGH
7.8 / 10
Minimal Risk Critical
Vector Specification
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitation Likelihood

EPSS Prediction

75.52 %
Predictive Probability
Percentile Rank
99.5 th

Documented as more likely to be exploited than 99.5% of known CVEs.

Detection Date

May 01, 2026

Remediation Due

May 15, 2026

CISA Catalog Active

Threat Analysis

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

Remediation Directive

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

External Intelligence

https://lore.kernel.org/linux-cve-announce/2026042214-CVE-2026-31431-3d65@gregkh/

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://xint.io/blog/copy-fail-linux-distributions#the-fix-6

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/about/

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/about/

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2026-31431