Vulnerability in Linux
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.
EPSS: 0.001 (1.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Linux — versions f9f4fda15e720686f1b2b436591ab11255e4e85e, 6.19, 0
- Linux Linux_kernel — versions 7.1
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-53344?
- CVE-2026-53344 is a medium-severity vulnerability in Linux, classified under Use of Uninitialized Resource. CVSS score: 5.5/10. Published 2026-07-01.
- How severe is CVE-2026-53344?
- Medium severity. CVSS v3 base score is 5.5 out of 10.