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AndroidOperating system · Google

CVE-2023-20630

MEDIUM · 6.7 CVSS v3.1 Published 2023-03-07
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
69/100
Remediation priority · Elevated
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
In usb, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07628505; Issue ID: ALPS07628505.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

A bounds check missing in the USB subsystem allows a local attacker to write beyond allocated buffer boundaries, potentially leading to privilege escalation. The vulnerability requires System-level execution privileges for exploitation but needs no user interaction, indicating the attacker already has local access at an elevated baseline.

MitigationApply the vendor patch (ALPS07628505) through system updates. As this is a kernel-level USB driver flaw, patching the underlying OS/firmware is the primary remediation; avoid using untrusted USB devices as a supplementary precaution.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
AndroidOperating system
Affected:= 11.0= 12.0= 13.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify Android version
    Run 'adb shell getprop ro.build.version.release' or check Settings > About Phone > Android version
    Affected if The version shown is 11.0, 12.0, or 13.0 exactly
  2. Check security patch level
    Run 'adb shell getprop ro.build.version.security_patch' to see the installed patch date
    Affected if The patch level is earlier than the date when ALPS07628505 was released (typically late 2023 or early 2024, depending on device) or the patch level is not displayed
  3. Verify USB subsystem is active
    Run 'adb shell ls -la /sys/class/usb_raw' or check that USB debugging is enabled in Developer Options
    Affected if USB functionality is available on the device (which is the default state for Android devices)
  4. Confirm system privileges baseline
    Run 'adb shell id' to check if you have root or system-level access
    Affected if The device has USB subsystem enabled and the Android version falls within the affected 11.0-13.0 range (exploitation requires system-level execution as noted in the CVE description)

A device is affected if it runs Android 11.0, 12.0, or 13.0 and has not received the vendor patch ALPS07628505 through a system update.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply the vendor patch (ALPS07628505) through system updates. As this is a kernel-level USB driver flaw, patching the underlying OS/firmware is the primary remediation; avoid using untrusted USB devices as a supplementary precaution.

Recommended fix Moderate confidence

Android 11.0/12.0/13.0 with May 2023 or later security patch level (contact device manufacturer for exact availability)

  1. 1. Check your device's current Android security patch level in Settings > About Phone > Android version
  2. 2. Wait for and apply the next available Android security update from your device manufacturer that includes the fix for CVE-2023-20630
  3. 3. Verify the security patch level has been updated to include the May 2023 or later Android Security Bulletin
Caveat Device-specific; verify with your OEM that the update does not conflict with existing system modifications or custom ROM configurations

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Android Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing6.0 h
  • Review / QA3.0 h
15.0 hours of engineering $2,560
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Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-20630 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data