CVE-2023-53315

Kernel compromise via zero-ID RX descriptor mishandling

Published Sep 16, 2025 · Updated Sep 16, 2025

Memory corruption in the Linux ath11k driver allows adjacent attackers to crash or compromise the kernel through sustained Wi-Fi traffic. ath11k_dp_process_rx accepts an invalid zero-valued REO descriptor, retrieves the live buffer-ID-zero SKB, and frees it while RX DMA can still own it. Exposure requires affected ath11k hardware within Wi-Fi range; the resulting DMA use-after-free can disclose or corrupt kernel memory and cause a fatal paging fault.

CVSS severity8.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in the Linux ath11k driver allows adjacent attackers to crash or compromise the kernel through sustained Wi-Fi traffic. ath11k_dp_process_rx accepts an invalid zero-valued REO descriptor, retrieves the live buffer-ID-zero SKB, and frees it while RX DMA can still own it. Exposure requires affected ath11k hardware within Wi-Fi range; the resulting DMA use-after-free can disclose or corrupt kernel memory and cause a fatal paging fault.

The record

CVE
CVE-2023-53315
Published
Sep 16, 2025
Updated
Sep 16, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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 <068fd06148fbf0af95bb08dc77cff34ee679fdbc
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3d3f8fe01a01d94a17fe1ae0d2e894049a972717
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <67459491f78146bcf7d93596e5b709d063dff5d8
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <866921dc06b94df91acfcf9359b57da943ed99b3
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f9fff67d2d7ca6fa8066132003a3deef654c55b1

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <068fd06148fbf0af95bb08dc77cff34ee679fdbc; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3d3f8fe01a01d94a17fe1ae0d2e894049a972717; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <67459491f78146bcf7d93596e5b709d063dff5d8; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <866921dc06b94df91acfcf9359b57da943ed99b3; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f9fff67d2d7ca6fa8066132003a3deef654c55b1

Published CVSS scores

8.8Linux kernel CNACVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
5.5CISA ADPCVSS: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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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