CVE-2023-54136

Service interruption via unreleased DMA buffer

Published Dec 24, 2025 · Updated Dec 24, 2025

Memory leak in the Linux kernel SPRD serial driver allows local users to interrupt service by exhausting DMA memory when device probing fails. The sprd_probe function allocates a coherent DMA buffer but returns from later initialization failures without releasing that allocation. Reachability requires low-privileged local access and compatible Spreadtrum UART hardware that enters the probe error path.

CVSS severity5.7
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in the Linux kernel SPRD serial driver allows local users to interrupt service by exhausting DMA memory when device probing fails. The sprd_probe function allocates a coherent DMA buffer but returns from later initialization failures without releasing that allocation. Reachability requires low-privileged local access and compatible Spreadtrum UART hardware that enters the probe error path.

The record

CVE
CVE-2023-54136
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=5.2
  2. Affected versionversion=f4487db58eb780a52d768f3b36aaaa8fd5839215 <0237f913694d57bcd7e0e7ae6f255b648a1c42a7
  3. Affected versionversion=f4487db58eb780a52d768f3b36aaaa8fd5839215 <4ee715e54e255b1be65722f715fca939d5c2ca7a
  4. Affected versionversion=f4487db58eb780a52d768f3b36aaaa8fd5839215 <6d209ed70f9c388727995aaece1f930fe63d402b
  5. Affected versionversion=f4487db58eb780a52d768f3b36aaaa8fd5839215 <9a26aaea6c212ea26bab159933dbfd3321a491f6
  6. Affected versionversion=f4487db58eb780a52d768f3b36aaaa8fd5839215 <c65be6ad55e5e45f8c4e40e1d8d7fe0e21b26e77
  7. Affected versionversion=f4487db58eb780a52d768f3b36aaaa8fd5839215 <cd119fdc3ee1450fbf7f78862b5de44c42b6e47f
  8. Affected versionversion=f4487db58eb780a52d768f3b36aaaa8fd5839215 <f34508d934c4f2efb6a85787fc37f42184dabadf

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.2; version=f4487db58eb780a52d768f3b36aaaa8fd5839215 <0237f913694d57bcd7e0e7ae6f255b648a1c42a7; version=f4487db58eb780a52d768f3b36aaaa8fd5839215 <4ee715e54e255b1be65722f715fca939d5c2ca7a; version=f4487db58eb780a52d768f3b36aaaa8fd5839215 <6d209ed70f9c388727995aaece1f930fe63d402b; version=f4487db58eb780a52d768f3b36aaaa8fd5839215 <9a26aaea6c212ea26bab159933dbfd3321a491f6; version=f4487db58eb780a52d768f3b36aaaa8fd5839215 <c65be6ad55e5e45f8c4e40e1d8d7fe0e21b26e77; version=f4487db58eb780a52d768f3b36aaaa8fd5839215 <cd119fdc3ee1450fbf7f78862b5de44c42b6e47f; version=f4487db58eb780a52d768f3b36aaaa8fd5839215 <f34508d934c4f2efb6a85787fc37f42184dabadf

Published CVSS scores

4.7SUSECVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
5.7SUSECVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.0Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/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

See the directory against your own environment.

Your stack

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