CVE-2023-54102

Summary

In the Linux kernel, the following vulnerability has been resolved:

scsi: lpfc: Prevent lpfc_debugfs_lockstat_write() buffer overflow

A static code analysis tool flagged the possibility of buffer overflow when using copy_from_user() for a debugfs entry.

Currently, it is possible that copy_from_user() copies more bytes than what would fit in the mybuf char array. Add a min() restriction check between sizeof(mybuf) - 1 and nbytes passed from the userspace buffer to protect against buffer overflow.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux6a828b0f6192b4930894925d1c1d0dc1f1d99e6e < 644a9d5e22761a41d5005a26996a643da96de962affected
LinuxLinux6a828b0f6192b4930894925d1c1d0dc1f1d99e6e < e0e7faee3a7dd6f51350cda64997116a247eb045affected
LinuxLinux6a828b0f6192b4930894925d1c1d0dc1f1d99e6e < f91037487036e2d2f18d3c2481be6b9a366bde7faffected
LinuxLinux6a828b0f6192b4930894925d1c1d0dc1f1d99e6e < a9df88cb31dcbd72104ec5883f35cbc1fb587e47affected
LinuxLinux6a828b0f6192b4930894925d1c1d0dc1f1d99e6e < ad050f6cf681ebb850a9d4bc19474d3896476301affected
LinuxLinux6a828b0f6192b4930894925d1c1d0dc1f1d99e6e < c6087b82a9146826564a55c5ca0164cac40348f5affected
LinuxLinux5.1affected
LinuxLinux0 < 5.1unaffected
LinuxLinux5.4.244 <= 5.4.*unaffected
LinuxLinux5.10.181 <= 5.10.*unaffected
LinuxLinux5.15.113 <= 5.15.*unaffected
LinuxLinux6.1.30 <= 6.1.*unaffected
LinuxLinux6.3.4 <= 6.3.*unaffected
LinuxLinux6.4 <= *unaffected

Weaknesses

References