CVE-2024-46836

Out-of-bounds kernel read via unchecked endpoint index

Published Sep 27, 2024 · Updated May 11, 2026

Out-of-bounds read in the aspeed_udc driver in Linux allows physically proximate attackers to read past an endpoint array via USB requests. ast_udc_getstatus masks the host-controlled wIndex field into epnum, then reads udc->ep[epnum].stopped without checking the five-entry array bound. The target must expose an ASPEED AST2600 UDC as a USB gadget to a hostile host; no crash or code execution has been publicly demonstrated.

CVSS severity7.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Out-of-bounds read in the aspeed_udc driver in Linux allows physically proximate attackers to read past an endpoint array via USB requests. ast_udc_getstatus masks the host-controlled wIndex field into epnum, then reads udc->ep[epnum].stopped without checking the five-entry array bound. The target must expose an ASPEED AST2600 UDC as a USB gadget to a hostile host; no crash or code execution has been publicly demonstrated.

The record

CVE
CVE-2024-46836
Published
Sep 27, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-129, T1200
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 27, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=055276c1320564b0192b3af323b8cc67f9b665e1 <31bd4fab49c0adc6228848357c1b1df9395858af
  2. Affected versionversion=055276c1320564b0192b3af323b8cc67f9b665e1 <6fe9ca2ca389114c8da66e534c18273497843e8a
  3. Affected versionversion=055276c1320564b0192b3af323b8cc67f9b665e1 <b2a50ffdd1a079869a62198a8d1441355c513c7c
  4. Affected versionversion=055276c1320564b0192b3af323b8cc67f9b665e1 <ee0d382feb44ec0f445e2ad63786cd7f3f6a8199
  5. Affected versionversion=6.0

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=055276c1320564b0192b3af323b8cc67f9b665e1 <31bd4fab49c0adc6228848357c1b1df9395858af; version=055276c1320564b0192b3af323b8cc67f9b665e1 <6fe9ca2ca389114c8da66e534c18273497843e8a; version=055276c1320564b0192b3af323b8cc67f9b665e1 <b2a50ffdd1a079869a62198a8d1441355c513c7c; version=055276c1320564b0192b3af323b8cc67f9b665e1 <ee0d382feb44ec0f445e2ad63786cd7f3f6a8199; version=6.0

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-129Improper Validation of Array Index
T1200Hardware Additions

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo