CVE-2026-93257
Received Received - Intake

Block Integrity Flag Handling Flaw in Linux Kernel

Publication date: 2026-09-24

Last updated on: 2026-09-24

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: block: handle nogenerate/noverify properly in fs-integrity Check the BIP_CHECK flags before generating or verifying PI information, otherwise this can be incorrectly called for non-PI metadata and cause generation of incorrect metadata and crashed in the verification handler. The new behavior matches that of the block layer auto-generated metadata.

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Meta Information

Published
2026-09-24
Last Modified
2026-09-24
Generated
2026-09-24
AI Q&A
2026-09-24
EPSS Evaluated
N/A
NVD
CVE-2026-93257
EUVD
EUVD-2026-86129

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

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Exploitability

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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability in the Linux kernel involves improper handling of the BIP_CHECK flags during filesystem integrity operations. When generating or verifying PI (Protection Information) data, the system may incorrectly process non-PI metadata, leading to incorrect metadata generation and potential crashes in the verification process.

Impact Analysis

This vulnerability could cause filesystem corruption or system crashes when verifying filesystem integrity. Users relying on filesystem protection mechanisms may experience data integrity issues or unexpected system failures during operations involving PI metadata.

Mitigation Strategies

Update the Linux kernel to the latest patched version to resolve the block layer integrity handling issue. Monitor kernel logs for errors related to PI metadata generation or verification failures.

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