CVE-2026-23133

Local denial of service via wrong DMA pointer

Published Feb 14, 2026 · Updated Feb 14, 2026

Memory-management error in the ath10k driver in Linux Kernel 4.16 and later allows local users to crash systems using ath10k hardware. The DMA allocation path retains the original CPU and DMA addresses in unaligned fields, but cleanup passes adjusted aligned addresses to dma_free_coherent(). The flaw affects hosts with the ath10k driver and supported Qualcomm Atheros wireless hardware; published material identifies no remote trigger or data impact.

CVSS severity5.5
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory-management error in the ath10k driver in Linux Kernel 4.16 and later allows local users to crash systems using ath10k hardware. The DMA allocation path retains the original CPU and DMA addresses in unaligned fields, but cleanup passes adjusted aligned addresses to dma_free_coherent(). The flaw affects hosts with the ath10k driver and supported Qualcomm Atheros wireless hardware; published material identifies no remote trigger or data impact.

The record

CVE
CVE-2026-23133
Published
Feb 14, 2026
Updated
Feb 14, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 14, 2026Record 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=2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <07f363f305793baecad41816f73056252f3df61e
  2. Affected versionversion=2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <1928851334ecfd6e0d663121ab69ac639d4217a6
  3. Affected versionversion=2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <5d6fa4d2c9799c09389588da5118a72d97d87e92
  4. Affected versionversion=2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <9282a1e171ad8d2205067e8ec3bbe4e3cef4f29f
  5. Affected versionversion=2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <b0ad924332a96550a84b8c0ae5483e7042d65fa9
  6. Affected versionversion=2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <e2dda298ef809aa201ea7c0904c4d064f6c497cb
  7. Affected versionversion=2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <fc8da65f9fe1bc6802f8240b342cfff4f5c7e841
  8. Affected versionversion=4.16

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <07f363f305793baecad41816f73056252f3df61e; version=2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <1928851334ecfd6e0d663121ab69ac639d4217a6; version=2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <5d6fa4d2c9799c09389588da5118a72d97d87e92; version=2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <9282a1e171ad8d2205067e8ec3bbe4e3cef4f29f; version=2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <b0ad924332a96550a84b8c0ae5483e7042d65fa9; version=2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <e2dda298ef809aa201ea7c0904c4d064f6c497cb; version=2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <fc8da65f9fe1bc6802f8240b342cfff4f5c7e841; version=4.16

Published CVSS scores

4.7Oracle LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NVDCVSS: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)
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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