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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-43240 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: x86/kexec: add a sanity check on previous kernel's ima kexec buffer When the second-stage kernel is booted via kexec with a limiting command line such as "mem=<size>", the physical range that contains the carried over IMA measurement list may fall outside the truncated RAM leading to a kernel panic. BUG: unable to handle page fault for address: ffff97793ff47000 RIP: ima_restore_measurement_list+0xdc/0x45a #PF: error_code(0x0000) – not-present page Other architectures already validate the range with page_is_ram(), as done in commit cbf9c4b9617b ("of: check previous kernel's ima-kexec-buffer against memory bounds") do a similar check on x86. Without carrying the measurement list across kexec, the attestation would fail.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/22e460b6333a5f818b042ac89201f8e735556f4a kernel.org
https://git.kernel.org/stable/c/37f18915a261afe84dab462624ed829cddb77a9b kernel.org
https://git.kernel.org/stable/c/4d7a8f5f28187e3d2958b2a134473da2665207e7 kernel.org
https://git.kernel.org/stable/c/c5489d04337b47e93c0623e8145fcba3f5739efd kernel.org
https://git.kernel.org/stable/c/d4a132f121c591b60dbaf57ea91f1faf11631fbc kernel.org
https://git.kernel.org/stable/c/f8f73bf0f8a57ee9b86792456bd42079bc98c6b7 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-43240
NVD Published Date:
05/06/2026
NVD Last Modified:
05/06/2026
Source:
kernel.org