CVE-2023-53465

Kernel memory corruption via one-based port indexing

Published Oct 1, 2025 · Updated Oct 1, 2025

Out-of-bounds write in the Qualcomm SoundWire driver in Linux 5.13 through 6.4.4 allows local users to corrupt kernel memory. qcom_swrm_get_port_config uses one-based port numbers to index the 14-entry pconfig array, causing port 14 to overwrite adjacent sruntime[0]. A 14-port Qualcomm SoundWire controller and access to its PCM device are required; exploitation can disclose a kernel pointer or crash the system.

CVSS severity7.8
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in the Qualcomm SoundWire driver in Linux 5.13 through 6.4.4 allows local users to corrupt kernel memory. qcom_swrm_get_port_config uses one-based port numbers to index the 14-entry pconfig array, causing port 14 to overwrite adjacent sruntime[0]. A 14-port Qualcomm SoundWire controller and access to its PCM device are required; exploitation can disclose a kernel pointer or crash the system.

The record

CVE
CVE-2023-53465
Published
Oct 1, 2025
Updated
Oct 1, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 1, 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=5.13
  2. Affected versionversion=9916c02ccd74e672b62dd1a9017ac2f237ebf512 <20f7c4d51c94abb1a1a7c21900db4fb5afe5c8ff
  3. Affected versionversion=9916c02ccd74e672b62dd1a9017ac2f237ebf512 <32eb67d7360d48c15883e0d21b29c0aab9da022e
  4. Affected versionversion=9916c02ccd74e672b62dd1a9017ac2f237ebf512 <490937d479abe5f6584e69b96df066bc87be92e9
  5. Affected versionversion=9916c02ccd74e672b62dd1a9017ac2f237ebf512 <801daff0078087b5df9145c9f5e643c28129734b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.13; version=9916c02ccd74e672b62dd1a9017ac2f237ebf512 <20f7c4d51c94abb1a1a7c21900db4fb5afe5c8ff; version=9916c02ccd74e672b62dd1a9017ac2f237ebf512 <32eb67d7360d48c15883e0d21b29c0aab9da022e; version=9916c02ccd74e672b62dd1a9017ac2f237ebf512 <490937d479abe5f6584e69b96df066bc87be92e9; version=9916c02ccd74e672b62dd1a9017ac2f237ebf512 <801daff0078087b5df9145c9f5e643c28129734b

Published CVSS scores

7.8LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.1NIST NVDCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1068Exploitation for Privilege Escalation

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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