VulnerabilityPublished 23 Oct 2026

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

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in fc2f651f520394893b14b75281a01e502bfa73bb : update Linux kernel when convenient.

Data as of 26 Oct 2026, 12:55 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in fc2f651f520394893b14b75281a01e502bfa73bb, b890e6163761ddb580cc74f43e15f8bbde15647e, 80e8b0ea73ba295e92dfb6cf1c41df9da64234c6 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 23 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ f9d7c7265bcff7d9a17425a8cddf702e8fe159c2, < fc2f651f520394893b14b75281a01e502bfa73bb	Fixed in fc2f651f520394893b14b75281a01e502bfa73bb
LinuxLinux	Affected ≥ f9d7c7265bcff7d9a17425a8cddf702e8fe159c2, < b890e6163761ddb580cc74f43e15f8bbde15647e	Fixed in b890e6163761ddb580cc74f43e15f8bbde15647e
LinuxLinux	Affected ≥ f9d7c7265bcff7d9a17425a8cddf702e8fe159c2, < 80e8b0ea73ba295e92dfb6cf1c41df9da64234c6	Fixed in 80e8b0ea73ba295e92dfb6cf1c41df9da64234c6
LinuxLinux	Affected ≥ f9d7c7265bcff7d9a17425a8cddf702e8fe159c2, < 77c449c9c946fc420008dc55cd30f53749c915e4	Fixed in 77c449c9c946fc420008dc55cd30f53749c915e4
LinuxLinux	Affected ≥ f9d7c7265bcff7d9a17425a8cddf702e8fe159c2, < 3c765fd5212c1bbc71568b1518a7ec963a7040b4	Fixed in 3c765fd5212c1bbc71568b1518a7ec963a7040b4
LinuxLinux	Affected =5.18	Fixed in–

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.

References

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