CVE-2023-54284

Data exposure or service interruption via length underflow

Published Dec 30, 2025 · Updated Dec 30, 2025

Integer underflow in the av7110 media driver in Linux allows local users to expose data or interrupt service via crafted transport-stream data. write_ts_to_decoder() subtracts the user-controlled buf[4] byte and fixed header lengths from len without ensuring that the result remains nonnegative before passing it to av7110_ipack_instant_repack(). Exploitation requires low-privileged local access and an AV7110-based DVB card; the maintainer states that harmful behavior from the negative length remains unconfirmed.

CVSS severity7.1
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer underflow in the av7110 media driver in Linux allows local users to expose data or interrupt service via crafted transport-stream data. write_ts_to_decoder() subtracts the user-controlled buf[4] byte and fixed header lengths from len without ensuring that the result remains nonnegative before passing it to av7110_ipack_instant_repack(). Exploitation requires low-privileged local access and an AV7110-based DVB card; the maintainer states that harmful behavior from the negative length remains unconfirmed.

The record

CVE
CVE-2023-54284
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
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=2.6.31
  2. Affected versionversion=fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf <423350af9e27f005611bd881b1df2cab66de943d
  3. Affected versionversion=fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf <620b983589e0223876bf1463b01100a9c67b56ba
  4. Affected versionversion=fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf <6606e2404ee9e20a3ae5b42fc3660d41b739ed3e
  5. Affected versionversion=fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf <6680af5be9f08d830567e9118f76d3e64684db8f
  6. Affected versionversion=fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf <77eeb4732135c18c2fdfab80839645b393f3e774
  7. Affected versionversion=fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf <7b93ab60fe9ed04be0ff155bc30ad39dea23e22b
  8. Affected versionversion=fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf <86ba65e5357bfbb6c082f68b265a292ee1bdde1d
  9. Affected versionversion=fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf <ca4ce92e3ec9fd3c7c936b912b95c53331d5159c
  10. Affected versionversion=fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf <eed9496a0501357aa326ddd6b71408189ed872eb

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.31; version=fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf <423350af9e27f005611bd881b1df2cab66de943d; version=fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf <620b983589e0223876bf1463b01100a9c67b56ba; version=fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf <6606e2404ee9e20a3ae5b42fc3660d41b739ed3e; version=fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf <6680af5be9f08d830567e9118f76d3e64684db8f; version=fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf <77eeb4732135c18c2fdfab80839645b393f3e774; version=fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf <7b93ab60fe9ed04be0ff155bc30ad39dea23e22b; version=fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf <86ba65e5357bfbb6c082f68b265a292ee1bdde1d; version=fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf <ca4ce92e3ec9fd3c7c936b912b95c53331d5159c; version=fd46d16d602ab7fd53cef7ff55b9dcb0b47ad3bf <eed9496a0501357aa326ddd6b71408189ed872eb

Published CVSS scores

7.1Linux kernel CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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

No sourced classifications are available.

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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