CVE-2026-53344

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.

Package Linux Kernel
Published 2026-07-01
Last modified 2026-07-01
Patch available
Yes

Affected versions

Linux kernel versions 6.19 and later are affected. Fixed in 7.0.13, 7.1 and their respective stable series.

Affected from
≥ 6.19
Fixed in
✓ 7.0.13 7.0.x ✓ 7.1

References

2 total

Frequently asked questions

  • What is CVE-2026-53344?

    CVE-2026-53344 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.19 onward and has been patched in 7.0.13 and 7.1. CVE-2026-53344 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • Is there a patch available for CVE-2026-53344?

    Yes — CVE-2026-53344 has been patched. Fixed versions include 7.0.13 and 7.1. If you are running Linux kernel 6.19 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2026-53344 actively exploited?

    No — CVE-2026-53344 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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