5.5

CVE-2025-38277

mtd: nand: ecc-mxic: Fix use of uninitialized variable ret

In the Linux kernel, the following vulnerability has been resolved:

mtd: nand: ecc-mxic: Fix use of uninitialized variable ret

If ctx->steps is zero, the loop processing ECC steps is skipped,
and the variable ret remains uninitialized. It is later checked
and returned, which leads to undefined behavior and may cause
unpredictable results in user space or kernel crashes.

This scenario can be triggered in edge cases such as misconfigured
geometry, ECC engine misuse, or if ctx->steps is not validated
after initialization.

Initialize ret to zero before the loop to ensure correct and safe
behavior regardless of the ctx->steps value.

Found by Linux Verification Center (linuxtesting.org) with SVACE.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
LinuxLinux Kernel Version >= 5.18 < 6.1.142
LinuxLinux Kernel Version >= 6.2 < 6.6.94
LinuxLinux Kernel Version >= 6.7 < 6.12.34
LinuxLinux Kernel Version >= 6.13 < 6.15.3
DebianDebian Linux Version11.0
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.16% 0.051
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-908 Use of Uninitialized Resource

The product uses or accesses a resource that has not been initialized.

https://git.kernel.org/stable/c/4d9d6e4be09472aa72953caca3dbefdc27846170
Patch
https://git.kernel.org/stable/c/a0d9d9b5a4634e146ae41cb25667322e5c7d74d2
Patch
https://git.kernel.org/stable/c/7a23cc510ecaabab4f6df7e9d910d16e279b72ad
Patch
https://git.kernel.org/stable/c/49482f4a39620f6afedcd3f6aa9e0d558b6a460b
Patch
https://git.kernel.org/stable/c/d95846350aac72303036a70c4cdc69ae314aa26d
Patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
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