What’s Vulnerable › Vulnerabilities

CVE-2026-68467: mtd: mchp23k256: use SPI match data for chip caps

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-15 · updated 2026-08-17

Description

In the Linux kernel, the following vulnerability has been resolved: mtd: mchp23k256: use SPI match data for chip caps The driver stores chip capacity information in both the OF match table and the SPI id table. Probe currently uses of_device_get_match_data(), so a non-OF SPI modalias match falls back to mchp23k256_caps even when the SPI id table selected a different part. Use spi_get_device_match_data() so SPI id-table driver_data is consumed when OF match data is absent. This keeps the existing default fallback while avoiding the wrong MTD geometry for id-table-only matches.

Affected products

• Linux kernel: 4.13 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/04ebd3766861f219325852c9598e0f0281cb3636
• https://git.kernel.org/stable/c/09e044192a42f716215fbd1a100ee87fa57426aa
• https://git.kernel.org/stable/c/2e179b028da9fd628a09286a2c9df4fa076b2cc9
• https://git.kernel.org/stable/c/7c0a3a73dccc9a3fc701f6be762449f18d0ca0fc
• https://git.kernel.org/stable/c/a0c38083623c8b210a5b87fd34bebd05aa935ae8
• https://git.kernel.org/stable/c/d322e40f4edf92bf0ca329e5aa4ae1c0316feb38
• https://git.kernel.org/stable/c/dbe2254d1da99c986f9a3392471fc5eaa3229647

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