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CVE-2026-23434 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: mtd: rawnand: serialize lock/unlock against other NAND operations nand_lock() and nand_unlock() call into chip->ops.lock_area/unlock_area without holding the NAND device lock. On controllers that implement SET_FEATURES via multiple low-level PIO commands, these can race with concurrent UBI/UBIFS background erase/write operations that hold the device lock, resulting in cmd_pending conflicts on the NAND controller. Add nand_get_device()/nand_release_device() around the lock/unlock operations to serialize them against all other NAND controller access.


Metrics

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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/28ea836cc44cb8b89c1c174707ead0c1133c60e9 kernel.org Patch 
https://git.kernel.org/stable/c/5fd5c078af23cb353507aa522e09d557d7eaef04 kernel.org Patch 
https://git.kernel.org/stable/c/a80291e577b44593a724d6cd64c14337c78f194d kernel.org Patch 
https://git.kernel.org/stable/c/bab2bc6e850a697a23b9e5f0e21bb8c187615e95 kernel.org Patch 
https://git.kernel.org/stable/c/ce5229e78078e437704157eb542f43a6f83b429b kernel.org Patch 
https://git.kernel.org/stable/c/f25446e2c28939753d3b62d34dfda49952b2557d kernel.org Patch 
https://git.kernel.org/stable/c/f71ce0ae5aefe39dd5b2f996c0e08550d2153ad2 kernel.org Patch 
https://git.kernel.org/stable/c/fe4a73c3dd48308149d57a10c2761e1d36ced7ba kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-noinfo Insufficient Information cwe source acceptance level NIST  

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-23434
NVD Published Date:
04/03/2026
NVD Last Modified:
04/23/2026
Source:
kernel.org