CVE-2023-53717

Kernel stack corruption via stale WMI callback

Published Oct 22, 2025 · Updated Oct 22, 2025

Stack out-of-bounds write in the Linux kernel allows local users to corrupt kernel stack memory after a timed-out ath9k WMI command. The ath9k WMI response callback copies a late response into wmi->cmd_rsp_buf after ath9k_wmi_cmd returns and its stack buffer is no longer valid. Exploitation requires low-privileged local access, a high-complexity timeout race, and the affected ath9k WMI driver; the write occurs in kernel context.

CVSS severity7.3
High
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack out-of-bounds write in the Linux kernel allows local users to corrupt kernel stack memory after a timed-out ath9k WMI command. The ath9k WMI response callback copies a late response into wmi->cmd_rsp_buf after ath9k_wmi_cmd returns and its stack buffer is no longer valid. Exploitation requires low-privileged local access, a high-complexity timeout race, and the affected ath9k WMI driver; the write occurs in kernel context.

The record

CVE
CVE-2023-53717
Published
Oct 22, 2025
Updated
Oct 22, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

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=2.6.35
  2. Affected versionversion=fb9987d0f748c983bb795a86f47522313f701a08 <1af7eacfad45149c54893a8a9df9e92ef89f0a90
  3. Affected versionversion=fb9987d0f748c983bb795a86f47522313f701a08 <554048a72d7ecfdd58cc1bfb56e0a1864e64e82c
  4. Affected versionversion=fb9987d0f748c983bb795a86f47522313f701a08 <78b56b0a613a87b61290b95be497fdfe2fe58aa6
  5. Affected versionversion=fb9987d0f748c983bb795a86f47522313f701a08 <89a33c3c847b19b19205cde1d924df2a6c70d8eb
  6. Affected versionversion=fb9987d0f748c983bb795a86f47522313f701a08 <8a2f35b9830692f7a616f2f627f943bc748af13a
  7. Affected versionversion=fb9987d0f748c983bb795a86f47522313f701a08 <8f28513d9520184059530c01a9f928a1b3809d3f
  8. Affected versionversion=fb9987d0f748c983bb795a86f47522313f701a08 <ae4933b4f17de8e2b7ff6f91b17d3b0099a6d6bc
  9. Affected versionversion=fb9987d0f748c983bb795a86f47522313f701a08 <bf6dc175a2b53098a69db1236d9d53982f4b1bc0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.35; version=fb9987d0f748c983bb795a86f47522313f701a08 <1af7eacfad45149c54893a8a9df9e92ef89f0a90; version=fb9987d0f748c983bb795a86f47522313f701a08 <554048a72d7ecfdd58cc1bfb56e0a1864e64e82c; version=fb9987d0f748c983bb795a86f47522313f701a08 <78b56b0a613a87b61290b95be497fdfe2fe58aa6; version=fb9987d0f748c983bb795a86f47522313f701a08 <89a33c3c847b19b19205cde1d924df2a6c70d8eb; version=fb9987d0f748c983bb795a86f47522313f701a08 <8a2f35b9830692f7a616f2f627f943bc748af13a; version=fb9987d0f748c983bb795a86f47522313f701a08 <8f28513d9520184059530c01a9f928a1b3809d3f; version=fb9987d0f748c983bb795a86f47522313f701a08 <ae4933b4f17de8e2b7ff6f91b17d3b0099a6d6bc; version=fb9987d0f748c983bb795a86f47522313f701a08 <bf6dc175a2b53098a69db1236d9d53982f4b1bc0

Published CVSS scores

7.3SUSECVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.0SUSECVSS: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

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Your stack

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