CVE-2026-68467
Published: August 18, 2026Last modified: August 18, 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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.182-r0) |
| 25 LTS | linux-lts | Fixed (6.12.103-r0) | |
| Stream | linux-lts | Fixed (6.18.43-r0) |
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