CVE-2022-47470

Local service interruption via unchecked ext4fsfilter bounds

Published May 9, 2023 · Updated Jan 28, 2025

Out-of-bounds read in ext4fsfilter on UNISOC chipsets running Android 10 or 11 allows local users to interrupt service. The driver reads beyond a valid buffer boundary because it performs the access without the required bounds check. Reachability requires System-level execution privileges; UNISOC has not disclosed the triggering input or whether interruption manifests as a crash or hang.

CVSS severity7.2
High
EPSS probability0.10%
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 ext4fsfilter on UNISOC chipsets running Android 10 or 11 allows local users to interrupt service. The driver reads beyond a valid buffer boundary because it performs the access without the required bounds check. Reachability requires System-level execution privileges; UNISOC has not disclosed the triggering input or whether interruption manifests as a crash or hang.

The record

CVE
CVE-2022-47470
Published
May 9, 2023
Updated
Jan 28, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-121, CWE-787, T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. May 9, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 28, 2025Record 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 privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.4NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
7.2UNISOCCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:L
4.4CISA-ADPCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CWE-787Out-of-bounds Write
T1499Endpoint Denial of Service

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

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Your stack

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