Is CVE-2026-53344 in the CISA KEV catalog?

No. CVE-2026-53344 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the EPSS score for CVE-2026-53344?

CVE-2026-53344 has an EPSS score of 0.14% (4th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-53344?

Upgrade linux on debian unstable to 7.0.13-1 or later.

CVE & CISA-KEV Catalog

CVE-2026-53344

UNSCORED

NVD

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.

How to fix

Remediation Available

linuxDebian

Fixed in:7.0.13-1CVE-2026-53344

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3.1 Vector

No CVSS vector data available.

Exploit Intelligence

0.14%probability of exploitation in 30 days

4thpercentile

Low risk: more likely to be exploited than 4% of all known CVEs.

References

Other references2

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-01.