Linux Kernel Vulnerability in SCSI qla2xxx - Pointer Dereference Issue

CVE-2023-53603

What is CVE-2023-53603?

A vulnerability within the SCSI qla2xxx module of the Linux kernel allows for a potential NULL pointer dereference. When the sa_ctl variable is NULL, the code incorrectly proceeds to allocate a fcport pointer. If the routine does not exit properly when sa_ctl is NULL, it may lead to dereferencing an uninitalized fcport pointer, posing stability and security risks in certain conditions. A resolution has been implemented to ensure that the routine exits safely whenever sa_ctl is found to be NULL, preventing this issue.

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