CVE-2023-53719

Resource leak via unreleased arc_uart I/O mapping

Published Oct 22, 2025 · Updated Oct 22, 2025

Resource leakage in the Linux kernel arc_uart driver from 3.17 leaves an I/O mapping allocated after failed serial-port setup. In arc_serial_probe(), the uart_add_one_port() failure path returns without releasing port->membase obtained from of_iomap(). The published record identifies no attacker-controlled trigger or resulting crash, hang, or other service interruption.

CVSS severityUnavailable
Unscored
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

Resource leakage in the Linux kernel arc_uart driver from 3.17 leaves an I/O mapping allocated after failed serial-port setup. In arc_serial_probe(), the uart_add_one_port() failure path returns without releasing port->membase obtained from of_iomap(). The published record identifies no attacker-controlled trigger or resulting crash, hang, or other service interruption.

The record

CVE
CVE-2023-53719
Published
Oct 22, 2025
Updated
Oct 22, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 22, 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=3.17
  2. Affected versionversion=8dbe1d5e09a7faec8d22cadcc1011acab8fa6e2a <081790eee6b47389a0d895262086d64c6a38d6e5
  3. Affected versionversion=8dbe1d5e09a7faec8d22cadcc1011acab8fa6e2a <153017561d2804cfae87cc9aa377aa84dd906ae1
  4. Affected versionversion=8dbe1d5e09a7faec8d22cadcc1011acab8fa6e2a <3f00df24a5021a6f02c1830a290acd4bceb22a2d
  5. Affected versionversion=8dbe1d5e09a7faec8d22cadcc1011acab8fa6e2a <40a462313ba4f337a2b419e7fb4a670f3dd95e14
  6. Affected versionversion=8dbe1d5e09a7faec8d22cadcc1011acab8fa6e2a <7525aa211758cc023a371e010d16ceaae1057807
  7. Affected versionversion=8dbe1d5e09a7faec8d22cadcc1011acab8fa6e2a <8ab5fc55d7f65d58a3c3aeadf11bdf60267cd2bd
  8. Affected versionversion=8dbe1d5e09a7faec8d22cadcc1011acab8fa6e2a <f76a18e53a66c0ef2938276110717b3805720cd9

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=3.17; version=8dbe1d5e09a7faec8d22cadcc1011acab8fa6e2a <081790eee6b47389a0d895262086d64c6a38d6e5; version=8dbe1d5e09a7faec8d22cadcc1011acab8fa6e2a <153017561d2804cfae87cc9aa377aa84dd906ae1; version=8dbe1d5e09a7faec8d22cadcc1011acab8fa6e2a <3f00df24a5021a6f02c1830a290acd4bceb22a2d; version=8dbe1d5e09a7faec8d22cadcc1011acab8fa6e2a <40a462313ba4f337a2b419e7fb4a670f3dd95e14; version=8dbe1d5e09a7faec8d22cadcc1011acab8fa6e2a <7525aa211758cc023a371e010d16ceaae1057807; version=8dbe1d5e09a7faec8d22cadcc1011acab8fa6e2a <8ab5fc55d7f65d58a3c3aeadf11bdf60267cd2bd; version=8dbe1d5e09a7faec8d22cadcc1011acab8fa6e2a <f76a18e53a66c0ef2938276110717b3805720cd9

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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)
VectorUnavailable
PrivilegesUnavailable
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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