CVE-2020-28374: Debian Linux

High severity, CVSS 8.1. EPSS: 6.6% chance of exploitation in the next 30 days.

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.

Affected products

• Debian Debian Linux: version 9.0 only; version 10.0 only
• Fedoraproject Fedora: version 32 only; version 33 only
• Linux Linux Kernel: before 5.10.7 (fixed in 5.10.7)

Published 2021-01-13. Last modified 2026-06-17.