CVE-2024-7542

Process-memory disclosure via uninitialized CMGR buffer

Published Aug 5, 2024 · Updated Aug 8, 2024

Use of uninitialized memory in oFono 1.34 allows local users to disclose process memory through a crafted AT+CMGR modem response. The at_cmgr_notify function in drivers/atmodem/sms.c passes a 176-byte stack PDU buffer onward without first zero-initializing bytes not filled by the response. Exploitation requires code execution on the target modem; the disclosure can expose root-process memory and support a separate exploit chain.

CVSS severity3.3
Low
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use of uninitialized memory in oFono 1.34 allows local users to disclose process memory through a crafted AT+CMGR modem response. The at_cmgr_notify function in drivers/atmodem/sms.c passes a 176-byte stack PDU buffer onward without first zero-initializing bytes not filled by the response. Exploitation requires code execution on the target modem; the disclosure can expose root-process memory and support a separate exploit chain.

The record

CVE
CVE-2024-7542
Published
Aug 5, 2024
Updated
Aug 8, 2024
Vendor
oFono
Product
oFono
Classifications
CWE-908, CWE-457, T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 5, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 8, 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?

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

  1. Affected versionversion=1.34

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

oFono · oFonoversion=1.34

Published CVSS scores

3.3NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-908Use of Uninitialized Resource
CWE-457Use of Uninitialized Variable
T1005Data from Local System

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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