CVE-2025-38277
mtd: nand: ecc-mxic: Fix use of uninitialized variable ret
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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.
Reserved 2025-04-16 | Published 2025-07-10 | Updated 2025-07-10 | Assigner Linuxgit.kernel.org/...c/4d9d6e4be09472aa72953caca3dbefdc27846170
git.kernel.org/...c/a0d9d9b5a4634e146ae41cb25667322e5c7d74d2
git.kernel.org/...c/7a23cc510ecaabab4f6df7e9d910d16e279b72ad
git.kernel.org/...c/49482f4a39620f6afedcd3f6aa9e0d558b6a460b
git.kernel.org/...c/d95846350aac72303036a70c4cdc69ae314aa26d
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