CVE-2024-56769

Local denial of service via uninitialized I2C buffer

Published Jan 6, 2025 · Updated May 11, 2026

Use of an uninitialized resource in the Linux kernel allows local users to interrupt service through a failing DVB I2C transfer. The dib3000_read_reg function passes a two-byte stack buffer to i2c_transfer and consumes undefined bytes when that read fails. Reachability requires the dib3000mb DVB frontend path and low-privileged local access; the reported consequence is limited to availability.

CVSS severity5.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use of an uninitialized resource in the Linux kernel allows local users to interrupt service through a failing DVB I2C transfer. The dib3000_read_reg function passes a two-byte stack buffer to i2c_transfer and consumes undefined bytes when that read fails. Reachability requires the dib3000mb DVB frontend path and low-privileged local access; the reported consequence is limited to availability.

The record

CVE
CVE-2024-56769
Published
Jan 6, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-908, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 6, 2025CVE 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

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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=2.6.19
  2. Affected versionversion=74340b0a8bc60b400c7e5fe4950303aa6f914d16 <035772fcd631eee2756b31cb6df249c0a8d453d7
  3. Affected versionversion=74340b0a8bc60b400c7e5fe4950303aa6f914d16 <1d6de21f00293d819b5ca6dbe75ff1f3b6392140
  4. Affected versionversion=74340b0a8bc60b400c7e5fe4950303aa6f914d16 <2dd59fe0e19e1ab955259978082b62e5751924c7
  5. Affected versionversion=74340b0a8bc60b400c7e5fe4950303aa6f914d16 <3876e3a1c31a58a352c6bf5d2a90e3304445a637
  6. Affected versionversion=74340b0a8bc60b400c7e5fe4950303aa6f914d16 <53106510736e734ce8b731ba871363389bfbf4c9
  7. Affected versionversion=74340b0a8bc60b400c7e5fe4950303aa6f914d16 <c1197c1457bb7098cf46366e898eb52b41b6876a
  8. Affected versionversion=74340b0a8bc60b400c7e5fe4950303aa6f914d16 <e11778189513cd7fb2edced5bd053bc18ede8418

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.19; version=74340b0a8bc60b400c7e5fe4950303aa6f914d16 <035772fcd631eee2756b31cb6df249c0a8d453d7; version=74340b0a8bc60b400c7e5fe4950303aa6f914d16 <1d6de21f00293d819b5ca6dbe75ff1f3b6392140; version=74340b0a8bc60b400c7e5fe4950303aa6f914d16 <2dd59fe0e19e1ab955259978082b62e5751924c7; version=74340b0a8bc60b400c7e5fe4950303aa6f914d16 <3876e3a1c31a58a352c6bf5d2a90e3304445a637; version=74340b0a8bc60b400c7e5fe4950303aa6f914d16 <53106510736e734ce8b731ba871363389bfbf4c9; version=74340b0a8bc60b400c7e5fe4950303aa6f914d16 <c1197c1457bb7098cf46366e898eb52b41b6876a; version=74340b0a8bc60b400c7e5fe4950303aa6f914d16 <e11778189513cd7fb2edced5bd053bc18ede8418

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.9SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
6.1SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/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.

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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
T1499.004Application or System Exploitation

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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