Critical SEVERITY — Vulnerability

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

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

Platform
Ubuntu Server
CVE Record
CVE-2026-31431
Advisory
CISA-KEV
Published
01 May 2026
Views
3
Primary source: Review the official advisory at nvd.nist.gov Kaynağa Git

Status

This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog as confirmed to be actively exploited. Not a theoretical risk — observed in the wild.

Description

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

Metadata

  • Vendor: Linux
  • Product: Kernel
  • Added to catalog: 2026-05-01

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.

  • Deadline for federal agencies: 2026-05-15
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