||A security issue was discovered in the Linux kernel since version 3.12. An attacker with access to a LUN and knowledge of Unit Serial Number assignments can read and write to any LIO backstore, regardless of SCSI transport settings. The issue is fixed in version 5.10.7 and 5.4.89.
||In drivers/target/target_core_xcopy.c in the Linux kernel before 5.10.7, insufficient identifier checking in the LIO SCSI target code can be used by remote attackers to read or write files via directory traversal in an XCOPY request, aka CID-2896c93811e3. For example, an attack can occur over a network if the attacker has access to one iSCSI LUN. The attacker gains control over file access because I/O operations are proxied via an attacker-selected backstore.