In the Linux kernel, the following vulnerability has been resolved:

pinctrl: mcp23s08: Initialize mcp->dev and mcp->addr before regmap init

Regmap initialization triggers regcache_maple_populate() which attempts
SPI read to populate cache. SPI read requires mcp->dev and mcp->addr to
be set, without them, NULL pointer dereference occurs during probe.

Move initialization before mcp23s08_spi_regmap_init() call.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
f9f4fda15e720686f1b2b436591ab11255e4e85e affected < 3a13bb9540dfd7014c5601608afcbbadbbcfd673
f9f4fda15e720686f1b2b436591ab11255e4e85e affected < 8473c3a197b57ff01396f7a2ec6ddf65383820d4
Linux Linux affected
Version Status Constraints
6.19 affected —
0 unaffected < 6.19
7.0.13 unaffected ≤ 7.0.*
7.1 unaffected ≤ *

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References
Link Providers
https://git.kernel.org/stable/c/3a13bb9540dfd7014c5601608afcbbadbbcfd673 cve-icon
https://git.kernel.org/stable/c/8473c3a197b57ff01396f7a2ec6ddf65383820d4 cve-icon
History

Wed, 01 Jul 2026 17:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-476

Wed, 01 Jul 2026 13:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: pinctrl: mcp23s08: Initialize mcp->dev and mcp->addr before regmap init Regmap initialization triggers regcache_maple_populate() which attempts SPI read to populate cache. SPI read requires mcp->dev and mcp->addr to be set, without them, NULL pointer dereference occurs during probe. Move initialization before mcp23s08_spi_regmap_init() call.
Title pinctrl: mcp23s08: Initialize mcp->dev and mcp->addr before regmap init
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-07-01T13:32:24.546Z

Reserved: 2026-06-09T07:44:35.399Z

Link: CVE-2026-53344

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

Updated: 2026-07-01T17:00:05Z

Weaknesses