Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: HID: mcp2221: prevented a buffer overflow in mcpsmbuswrite Slight warning: drivers/hid/hid-mcp2221.c:388 mcpsmbuswrite error: memcpy ‘&mcp-txbuf5’ is too small 59 vs 255 drivers/hid/hid-mcp2221.c:388 mcpsmbuswrite error: memcp...

CVE-2026-89621

A flaw was found in the Linux kernel's HID Human Interface Device mcp2221 driver. A malicious USB device can exploit this vulnerability by sending a specially crafted, short HID report with an invalid size. This can cause the system to read past valid memory, leading to the disclosure of sensitiv...

CVE-2026-89623

A flaw was found in the Linux kernel's HID Human Interface Device mcp2221 driver. This vulnerability occurs when the device's input/output IO operations are not properly stopped before hardware teardown during device removal or probe failure. This timing issue can lead to a use-after-free...

CVE-2026-89622

A flaw was found in the Linux kernel's HID Human Interface Device subsystem, specifically in the mcp2221 driver. This vulnerability occurs because the driver fails to clear a buffer pointer after an I2C/SMBus transfer completes. A local attacker could exploit this by triggering a delayed or...

AZL-100644 CVE-2026-89621 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: HID: mcp2221: validate report size in mcp2221rawevent mcp2221rawevent never validates the size of incoming HID reports. In the MCP2221I2CGETDATA path it trusts the device-supplied data3 as the copy length without checking that 4 ...

UBUNTU-CVE-2026-89621

In the Linux kernel, the following vulnerability has been resolved: HID: mcp2221: validate report size in mcp2221rawevent mcp2221rawevent never validates the size of incoming HID reports. In the MCP2221I2CGETDATA path it trusts the device-supplied data3 as the copy length without checking that 4 ...

CVE-2026-89622 HID: mcp2221: clear rxbuf after I2C/SMBus transfer completes

In the Linux kernel, the following vulnerability has been resolved: HID: mcp2221: clear rxbuf after I2C/SMBus transfer completes mcpi2csmbusread stores the caller-supplied buffer pointer in mcp-rxbuf for the duration of a transfer but never clears it when the transfer finishes or times out. Once...

EUVD-2026-76535

In the Linux kernel, the following vulnerability has been resolved: HID: mcp2221: stop device IO before hidhwstop Quiesce device IO at the start of the devm cleanup callback mcp2221hidunregister so that incoming HID reports cannot race with hardware teardown during probe failure or device removal...

CVE-2026-89622

In the Linux kernel, the following vulnerability has been resolved: HID: mcp2221: clear rxbuf after I2C/SMBus transfer completes mcpi2csmbusread stores the caller-supplied buffer pointer in mcp-rxbuf for the duration of a transfer but never clears it when the transfer finishes or times out. Once...

EUVD-2026-76534

In the Linux kernel, the following vulnerability has been resolved: HID: mcp2221: clear rxbuf after I2C/SMBus transfer completes mcpi2csmbusread stores the caller-supplied buffer pointer in mcp-rxbuf for the duration of a transfer but never clears it when the transfer finishes or times out. Once...

CVE-2026-89621

CVE-2026-89621 is a Linux kernel vulnerability in the HID mcp2221 driver's mcp2221_raw_event() function. The function fails to validate the size of incoming HID reports in the MCP2221_I2C_GET_DATA path, trusting a device-supplied data[3] field as the copy length without verifying that 4 + data[3]...

The vulnerability of the mcp_smbus_write() function in the drivers/hid/hid-mcp2221.c module of the user interface subsystem driver for Linux operating systems allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the mcpsmbuswrite function in the drivers/hid/hid-mcp2221.c module of the Linux kernel’s input device subsystem driver relates to the copying of buffers without checking the size of the input data a classic buffer overflow attack. Exploiting this vulnerability could allow an...