The vulnerability of the mcp23s08_probe() function in the drivers/pinctrl/pinctrl-mcp23s08_spi.c driver for Linux kernel’s PINCTRL output devices allows a hacker to cause a service failure.

The vulnerability of the mcp23s08probe function in the drivers/pinctrl/pinctrl-mcp23s08spi.c file of the Linux kernel’s GPIO controller driver is related to the pointer assignment. Exploiting this vulnerability could allow a remote attacker to cause a service failure...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: pinctrl: mcp23s08: Fixed sleeping in atomic context due to regmap locking If a device uses the MCP23xxx IO expander to receive IRQs, the following bug can occur: BUG: Sleeping function called from invalid context at...

Linux Distros Unpatched Vulnerability : CVE-2026-53344

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - pinctrl: mcp23s08: Initialize mcp-dev and mcp-addr before regmap init Regmap initialization triggers regcachemaplepopulate which attempts SPI read to populate...

CVE-2026-53344

A flaw was found in the Linux kernel's pinctrl: mcp23s08 driver. During the initialization of the regmap register map for the mcp23s08 component, an attempt to perform an SPI Serial Peripheral Interface read occurs before critical device parameters mcp-dev and mcp-addr are properly set. This...

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 regcachemaplepopulate which attempts SPI read to populate cache. SPI read requires mcp-dev and mcp-addr to be set, without them,...

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 regcachemaplepopulate which attempts SPI read to populate cache. SPI read requires mcp-dev and mcp-addr to be set, without them,...

UBUNTU-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 regcachemaplepopulate which attempts SPI read to populate cache. SPI read requires mcp-dev and mcp-addr to be set, without them,...

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 regcachemaplepopulate which attempts SPI read to populate cache. SPI read requires mcp-dev and mcp-addr to be set, without them,...

EUVD-2026-40978

In the Linux kernel, the following vulnerability has been resolved: pinctrl: mcp23s08: Initialize mcp-dev and mcp-addr before regmap init Regmap initialization triggers regcachemaplepopulate which attempts SPI read to populate cache. SPI read requires mcp-dev and mcp-addr to be set, without them,...

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

In the Linux kernel, the following vulnerability has been resolved: pinctrl: mcp23s08: Initialize mcp-dev and mcp-addr before regmap init Regmap initialization triggers regcachemaplepopulate which attempts SPI read to populate cache. SPI read requires mcp-dev and mcp-addr to be set, without them,...

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 regcachemaplepopulate which attempts SPI read to populate cache. SPI read requires mcp-dev and mcp-addr to be set, without them,...

CVE-2026-53344

CVE-2026-53344 affects the Linux kernel in the pinctrl: mcp23s08 driver. The issue occurs during regmap initialization when SPI reads run before critical mcp->dev and mcp->addr are set, causing a NULL pointer dereference during probe. The fix moves the initialization of mcp->dev and mcp-...

PT-2026-54812

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A NULL pointer dereference occurs during the probe process in the pinctrl mcp23s08 driver. This happens because regmap initialization triggers the regcache maple populate function, which...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: pinctrl: mcp23s08: Disables all pin interrupts during probing The chip being probed may have the interrupt-on-change feature enabled on some of its pins, for example after a reboot. This can cause the chip to generate interrupts...

SUSE CVE-2026-43087

In the Linux kernel, the following vulnerability has been resolved: pinctrl: mcp23s08: Disable all pin interrupts during probe A chip being probed may have the interrupt-on-change feature enabled on some of its pins, for example after a reboot. This can cause the chip to generate interrupts for...

Linux Distros Unpatched Vulnerability : CVE-2026-43087

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: pinctrl: mcp23s08: Disable all pin interrupts during probe A chip being probed may have the...

CVE-2026-43087

A flaw was found in the Linux kernel's pinctrl subsystem, specifically within the mcp23s08 driver. During system initialization, a hardware chip may have its interrupt-on-change feature enabled on certain pins. This can cause the system to generate interrupts for which no corresponding software...

EUVD-2026-27584

In the Linux kernel, the following vulnerability has been resolved: pinctrl: mcp23s08: Disable all pin interrupts during probe A chip being probed may have the interrupt-on-change feature enabled on some of its pins, for example after a reboot. This can cause the chip to generate interrupts for...

CVE-2026-43087

In the Linux kernel, the following vulnerability has been resolved: pinctrl: mcp23s08: Disable all pin interrupts during probe A chip being probed may have the interrupt-on-change feature enabled on some of its pins, for example after a reboot. This can cause the chip to generate interrupts for...

CVE-2026-43087 pinctrl: mcp23s08: Disable all pin interrupts during probe

In the Linux kernel, the following vulnerability has been resolved: pinctrl: mcp23s08: Disable all pin interrupts during probe A chip being probed may have the interrupt-on-change feature enabled on some of its pins, for example after a reboot. This can cause the chip to generate interrupts for...