SB2026041324 - Integer overflow in Linux kernel gadget function driver
Published: April 13, 2026
Security Bulletin ID
SB2026041324
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Integer overflow (CVE-ID: CVE-2026-31412)
The vulnerability allows a remote attacker to cause memory corruption or out-of-bounds access.
The vulnerability exists due to integer overflow in check_command_size_in_blocks() when processing crafted SCSI READ or WRITE commands from a USB host. A remote attacker can send a specially crafted command requesting a large amount of data to cause memory corruption or out-of-bounds access.
The issue occurs because a left shift of the command-derived data size by the logical block size can wrap around and truncate the resulting byte count.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/228b37936376143f4b60cc6828663f6eaceb81b5
- https://git.kernel.org/stable/c/3428dc5520c811e66622b2f5fa43341bf9a1f8b3
- https://git.kernel.org/stable/c/387ebb0453b99d71491419a5dc4ab4bee0cacbac
- https://git.kernel.org/stable/c/8479891d1f04a8ce55366fe4ca361ccdb96f02e1
- https://git.kernel.org/stable/c/91817ad5452defe69bc7bc0e355f0ed5d01125cc
- https://git.kernel.org/stable/c/ce0caaed5940162780c5c223b8ae54968a5f059b