CVE-2026-53304

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A soft lockup occurs when opening /dev/sgX due to improper validation of the def reserved size module parameter. While the sg proc write dressz() function enforces a size limit between 0 and 1,048,576, this limit can be bypassed by directly modifying the module parameter via /sys/module/sg/parameters/def reserved size. Assigning a negative value to def reserved size leads to a system hang during the execution of sg build reserve(), sg add sfp(), and sg open().

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.