Improper handling of exceptional conditions in Linux kernel - CVE-2026-46290

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Main Vulnerability Database Vulnerabilities #VU134240

Improper handling of exceptional conditions in Linux kernel - CVE-2026-46290

Published: June 10, 2026


Vulnerability identifier: #VU134240
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-46290
CWE-ID: CWE-755
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper exceptional-condition handling in efi_crash_gracefully_on_page_fault() when processing EFI runtime service calls that trigger page faults. A local user can trigger a page fault during an EFI runtime service call to cause a denial of service.

Only systems with buggy firmware that triggers page faults during EFI runtime calls are affected.


Affected software

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-gcp-6.17 (Ubuntu package)
linux-azure-6.17 (Ubuntu package)
linux-oracle-6.17 (Ubuntu package)
linux-nvidia-6.17 (Ubuntu package)
linux-oem-6.17 (Ubuntu package)
linux-realtime (Ubuntu package)
linux-oracle (Ubuntu package)
linux-gcp (Ubuntu package)
linux-aws (Ubuntu package)
linux-raspi (Ubuntu package)
linux-azure (Ubuntu package)
linux-realtime-6.17 (Ubuntu package)
linux-nvidia (Ubuntu package)
linux-ibm (Ubuntu package)
linux-nvidia-bos (Ubuntu package)
linux-oracle-7.0 (Ubuntu package)
linux-azure-7.0 (Ubuntu package)
linux-gcp-7.0 (Ubuntu package)
linux-oem-7.0 (Ubuntu package)
linux-gke (Ubuntu package)
linux-azure-fde (Ubuntu package)
linux-nvidia-7.0 (Ubuntu package)
linux-azure-fde-6.17 (Ubuntu package)

How to mitigate CVE-2026-46290

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
linux (Ubuntu package) - update to 7.0.0-28.28
linux-gcp-6.17 (Ubuntu package) - update to 6.17.0-1021.24~24.04.1
linux-azure-6.17 (Ubuntu package) - update to 6.17.0-1021.21~24.04.1
linux-oracle-6.17 (Ubuntu package) - update to 6.17.0-1019.19~24.04.3
linux-nvidia-6.17 (Ubuntu package) - update to 6.17.0-1031.31
linux-oem-6.17 (Ubuntu package) - update to 6.17.0-1028.28
linux-realtime (Ubuntu package) - update to 7.0.0-28.28.1
linux-oracle (Ubuntu package) - update to 7.0.0-1008.8
linux-gcp (Ubuntu package) - update to 7.0.0-1008.8
linux-aws (Ubuntu package) - update to 7.0.0-1009.9
linux-raspi (Ubuntu package) - update to 7.0.0-1015.15
linux-azure (Ubuntu package) - update to 7.0.0-1010.10
linux-realtime-6.17 (Ubuntu package) - update to 6.17.0-1018.20~24.04.1
linux-nvidia (Ubuntu package) - update to 7.0.0-1016.16
linux-ibm (Ubuntu package) - update to 7.0.0-1010.10
linux-nvidia-bos (Ubuntu package) - update to 7.0.0-2016.16
linux-oracle-7.0 (Ubuntu package) - update to 7.0.0-1011.11~24.04.1
linux-azure-7.0 (Ubuntu package) - update to 7.0.0-1014.14~24.04.1
linux-gcp-7.0 (Ubuntu package) - update to 7.0.0-1011.11~24.04.1
linux-oem-7.0 (Ubuntu package) - update to 7.0.0-1009.9
linux-gke (Ubuntu package) - update to 7.0.0-1003.4
linux-azure-fde (Ubuntu package) - update to 7.0.0-1009.9
linux-nvidia-7.0 (Ubuntu package) - update to 7.0.0-1016.16~24.04.1
linux-azure-fde-6.17 (Ubuntu package) - update to 6.17.0-1018.18~24.04.1

External References

Related Security Bulletins