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CVE-2026-53344
pinctrl: mcp23s08: Initialize mcp->dev and mcp->addr before regmap init
Overview
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.

Details
INFO

Published Date :

July 1, 2026, 1:32 p.m.

Last Modified :

July 1, 2026, 1:32 p.m.

Remotely Exploit :

No

Source :

Linux
Impact
Affected Products

The following products are affected by CVE-2026-53344 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
Fix null pointer dereference by initializing device and address before regmap.
  • Initialize mcp->dev and mcp->addr before regmap.
  • Move initialization before mcp23s08_spi_regmap_init().
  • Apply the patch to the Linux kernel.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-53344 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
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