What’s Vulnerable › Vulnerabilities

CVE-2026-98931: mtd: spinand: fix NULL pointer dereference with no ECC engine

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-23 · updated 2026-10-30

Description

In the Linux kernel, the following vulnerability has been resolved: mtd: spinand: fix NULL pointer dereference with no ECC engine When "nand-no-ecc-engine" is set in DT, nanddev_get_ecc_engine() takes the NAND_ECC_ENGINE_TYPE_NONE path and returns success while leaving nand->ecc.engine NULL. The SPI-NAND code nevertheless dereferences it unconditionally to test for a pipelined engine, so probing such a device oopses immediately. Rather than open-coding the test three times, add a nand_ecc_is_pipelined() helper to the NAND core that folds the NULL check into the integration comparison, and use it everywhere. Future callers then cannot reintroduce the problem.

Affected products

• Linux: 5.18 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/3c765fd5212c1bbc71568b1518a7ec963a7040b4
• https://git.kernel.org/stable/c/77c449c9c946fc420008dc55cd30f53749c915e4
• https://git.kernel.org/stable/c/80e8b0ea73ba295e92dfb6cf1c41df9da64234c6
• https://git.kernel.org/stable/c/ab781c7840bb8a210156e25eb0c027d6097fb74d
• https://git.kernel.org/stable/c/b890e6163761ddb580cc74f43e15f8bbde15647e
• https://git.kernel.org/stable/c/fc2f651f520394893b14b75281a01e502bfa73bb

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