CVE-2026-68467

mtd: mchp23k256: use SPI match data for chip caps

State: Published
Severity: 7.8 High
Published: Aug 15, 2026
Updated: Aug 17, 2026
Reserved: Jul 30, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	4379075a870b8de43a9ecd5b46884953234fc669 to before 2e179b028da9fd628a09286a2c9df4fa076b2cc9Affected 4379075a870b8de43a9ecd5b46884953234fc669 to before a0c38083623c8b210a5b87fd34bebd05aa935ae8Affected 4379075a870b8de43a9ecd5b46884953234fc669 to before 7c0a3a73dccc9a3fc701f6be762449f18d0ca0fcAffected 4379075a870b8de43a9ecd5b46884953234fc669 to before dbe2254d1da99c986f9a3392471fc5eaa3229647Affected 4379075a870b8de43a9ecd5b46884953234fc669 to before 04ebd3766861f219325852c9598e0f0281cb3636Affected 4379075a870b8de43a9ecd5b46884953234fc669 to before 09e044192a42f716215fbd1a100ee87fa57426aaAffected 4379075a870b8de43a9ecd5b46884953234fc669 to before d322e40f4edf92bf0ca329e5aa4ae1c0316feb38Affected
LinuxLinux	4.13Affected before 4.13Not affected 5.15.212 through 5.15.Not affected 6.1.178 through 6.1.Not affected 6.6.145 through 6.6.Not affected 6.12.97 through 6.12.Not affected 6.18.40 through 6.18.Not affected 7.1.5 through 7.1.Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

4379075a870b8de43a9ecd5b46884953234fc669 to before 2e179b028da9fd628a09286a2c9df4fa076b2cc9Affected
4379075a870b8de43a9ecd5b46884953234fc669 to before a0c38083623c8b210a5b87fd34bebd05aa935ae8Affected
4379075a870b8de43a9ecd5b46884953234fc669 to before 7c0a3a73dccc9a3fc701f6be762449f18d0ca0fcAffected
4379075a870b8de43a9ecd5b46884953234fc669 to before dbe2254d1da99c986f9a3392471fc5eaa3229647Affected
4379075a870b8de43a9ecd5b46884953234fc669 to before 04ebd3766861f219325852c9598e0f0281cb3636Affected
4379075a870b8de43a9ecd5b46884953234fc669 to before 09e044192a42f716215fbd1a100ee87fa57426aaAffected
4379075a870b8de43a9ecd5b46884953234fc669 to before d322e40f4edf92bf0ca329e5aa4ae1c0316feb38Affected

LinuxLinux

4.13Affected
before 4.13Not affected
5.15.212 through 5.15.*Not affected
6.1.178 through 6.1.*Not affected
6.6.145 through 6.6.*Not affected
6.12.97 through 6.12.*Not affected
6.18.40 through 6.18.*Not affected
7.1.5 through 7.1.*Not affected
7.2 and laterNot affected

References

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