CVE-2023-54314

Local crash via zero-length I2C message

Published Dec 30, 2025 · Updated Dec 30, 2025

Null-pointer dereference in the Linux kernel AF9005 USB DVB driver allows local users to crash affected systems through an I2C message. af9005_i2c_xfer accepts a user-controlled message whose buffer is null and length is zero, then reads msg[i].buf[0] without validating the length. Reachability requires the AF9005 driver path and a crafted local transfer; the documented consequence is a kernel crash.

CVSS severity5.5
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null-pointer dereference in the Linux kernel AF9005 USB DVB driver allows local users to crash affected systems through an I2C message. af9005_i2c_xfer accepts a user-controlled message whose buffer is null and length is zero, then reads msg[i].buf[0] without validating the length. Reachability requires the AF9005 driver path and a crafted local transfer; the documented consequence is a kernel crash.

The record

CVE
CVE-2023-54314
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 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?

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

  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <033b0c0780adee32dde218179e9bc51d2525108f
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0c02eb70b1dd4ae9bb304ce6cdadbc6faba2b2e9
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <63d962ac7a52c0ff4cd09af2e284dce5e5955dfe
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <98c12abb275b75a98ff62de9466d21e4daa98536
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <abb6fd93e05e80668d2317fe1110bc99b05034c3
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c7e5ac737db25d7387fe517cb5207706782b6cf8
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e595ff350b2fd600823ee8491df7df693ae4b7c5
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f4ee84f27625ce1fdf41e8483fa0561a1b837d10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <033b0c0780adee32dde218179e9bc51d2525108f; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0c02eb70b1dd4ae9bb304ce6cdadbc6faba2b2e9; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <63d962ac7a52c0ff4cd09af2e284dce5e5955dfe; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <98c12abb275b75a98ff62de9466d21e4daa98536; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <abb6fd93e05e80668d2317fe1110bc99b05034c3; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c7e5ac737db25d7387fe517cb5207706782b6cf8; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e595ff350b2fd600823ee8491df7df693ae4b7c5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f4ee84f27625ce1fdf41e8483fa0561a1b837d10

Published CVSS scores

4.6TenableAV:L/AC:L/Au:S/C:N/I:N/A:C
5.5TenableCVSS:3.1/AV:L/AC:L/PR:L/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.

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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

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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