CVE-2026-98232

A flaw was found in the Linux kernel's SCSI subsystem. This vulnerability allows a malicious USB storage device to achieve arbitrary code execution or disclose sensitive kernel memory. By returning malformed MODE SENSE length values for a device advertising Command Duration Limits (CDL) support, an attacker can trigger an integer underflow and out-of-bounds stack memory access in the scsi_cdl_enable() function during automatic device scanning without requiring user interaction.

This vulnerability is rated as an Important severity flaw because successful exploitation enables kernel memory disclosure and arbitrary code execution with highest privileges during initial hardware discovery. In typical Red Hat deployments, exploiting the issue necessitates physical access to insert a crafted storage peripheral or the capability to attach virtualized devices to a guest instance. Because the condition triggers automatically upon device probing without needing user interaction or volume mounting, systems that allow hot-plugging of untrusted hardware or emulated devices are exposed.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.