CVE-2020-13143Public exploit

System crash via truncated USB UDC name

Published May 18, 2020 · Updated Aug 4, 2024

Out-of-bounds read in the Linux kernel 3.16 through 5.6.13 allows local users to crash the system via a crafted USB gadget UDC name. The store handler uses the original input length to index a kstrdup-allocated copy that stops at an embedded null byte, so name[len - 1] reads beyond the allocation. Writing the USB gadget UDC configfs attribute and binding a gadget to a controller are required; the demonstrated consequence is a kernel crash.

CVSS severity6.5
Medium
EPSS probability5.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in the Linux kernel 3.16 through 5.6.13 allows local users to crash the system via a crafted USB gadget UDC name. The store handler uses the original input length to index a kstrdup-allocated copy that stops at an embedded null byte, so name[len - 1] reads beyond the allocation. Writing the USB gadget UDC configfs attribute and binding a gadget to a controller are required; the demonstrated consequence is a kernel crash.

The record

CVE
CVE-2020-13143
Published
May 18, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125, T1499
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. May 18, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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