CVE-2026-68467

mtd: mchp23k256: use SPI match data for chip caps

HIGH

7.8

CVSS Score

Published: August 15, 2026 at 05:51 AM UTC

Updated: August 17, 2026 at 06:17 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7.8

Exploit prediction

EPSS 0.1%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.13 ≤ v < 5.15.2124.13 ≤ v < 6.1.1784.13 ≤ v < 6.12.974.13 ≤ v < 6.18.404.13 ≤ v < 6.6.1454.13 ≤ v < 7.1.54.13 ≤ v < 7.24.134379075a870b8de43a9ecd5b46884953234fc669

Vendor states this is fixed in 04ebd3766861f219325852c9598e0f0281cb3636 (fixed)

Vendor states this is fixed in 09e044192a42f716215fbd1a100ee87fa57426aa (fixed)

Vendor states this is fixed in 2e179b028da9fd628a09286a2c9df4fa076b2cc9 (fixed)

Vendor states this is fixed in 7c0a3a73dccc9a3fc701f6be762449f18d0ca0fc (fixed)

Vendor states this is fixed in a0c38083623c8b210a5b87fd34bebd05aa935ae8 (fixed)

Vendor states this is fixed in d322e40f4edf92bf0ca329e5aa4ae1c0316feb38 (fixed)

Vendor states this is fixed in dbe2254d1da99c986f9a3392471fc5eaa3229647 (fixed)

Vendor states this is fixed in 4.13 (unaffected)

Vendor states this is fixed in 5.15.212 (unaffected)

Vendor states this is fixed in 6.1.178 (unaffected)

Vendor states this is fixed in 6.12.97 (unaffected)

Vendor states this is fixed in 6.18.40 (unaffected)