CVE-2013-2140

Low

The dispatch_discard_io function in drivers/block/xen-blkback/blkback.c in the Xen blkback implementation in the Linux kernel before 3.10.5 allows guest OS users to cause a denial of service (data loss) via filesystem write operations on a read-only disk that supports the (1) BLKIF_OP_DISCARD (aka discard or TRIM) or (2) SCSI UNMAP feature.

Package Linux Kernel
Published 2013-09-25
Last modified 2026-04-29
CVSS version 2.0
Patch available
Awaiting data

CVSS 2.0 score

3.8

out of 10
Low
Attack Vector
Adjacent
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
None
Integrity
Availability
Vector string
AV:A/AC:M/Au:S/C:N/I:P/A:P

Weakness type

CWE-20

CVE-2013-2140 is a Improper Input Validation vulnerability

What is Improper Input Validation?

The product receives input but does not validate it correctly, allowing attackers to craft inputs that cause unexpected behavior. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2013-2140 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Frequently asked questions

  • What is CVE-2013-2140?

    CVE-2013-2140 is a Low severity Linux kernel vulnerability with a CVSS score of 3.8 out of 10 , classified as an Improper Input Validation flaw (CWE-20) . CVE-2013-2140 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2013-2140?

    CVE-2013-2140 has a CVSS score of 3.8 out of 10, rated Low severity (CVSS 2.0). The vector string is AV:A/AC:M/Au:S/C:N/I:P/A:P .

  • Is there a patch available for CVE-2013-2140?

    No patch is currently available for CVE-2013-2140. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

  • Is CVE-2013-2140 actively exploited?

    No — CVE-2013-2140 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

  • What is Improper Input Validation (CWE-20)?

    The product receives input but does not validate it correctly, allowing attackers to craft inputs that cause unexpected behavior. View CWE-20 on MITRE CWE →

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