CVE-2025-38482

Kernel data disclosure and crash via unchecked shift

Published Jul 28, 2025 · Updated May 11, 2026

Out-of-bounds read in the Linux kernel's das6402 Comedi driver allows local users to disclose data or crash the kernel. The das6402 attach path uses the unchecked userspace-supplied it->options[1] value as the shift count in an IRQ support mask, permitting a negative or excessive shift. Exploitation requires local access to configure the Comedi device and reach the affected driver; the bounded impacts are kernel-memory disclosure and a kernel crash.

CVSS severity7.1
High
EPSS probability0.16%
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 read in the Linux kernel's das6402 Comedi driver allows local users to disclose data or crash the kernel. The das6402 attach path uses the unchecked userspace-supplied it->options[1] value as the shift count in an IRQ support mask, permitting a negative or excessive shift. Exploitation requires local access to configure the Comedi device and reach the affected driver; the bounded impacts are kernel-memory disclosure and a kernel crash.

The record

CVE
CVE-2025-38482
Published
Jul 28, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 28, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record 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=3.15
  2. Affected versionversion=79e5e6addbb18bf56075f0ff552094a28636dd03 <3eab654f5d199ecd45403c6588cda63e491fcfca
  3. Affected versionversion=79e5e6addbb18bf56075f0ff552094a28636dd03 <4a3c18cde02e35aba87e0ad5672b3e1c72dda5a4
  4. Affected versionversion=79e5e6addbb18bf56075f0ff552094a28636dd03 <70f2b28b5243df557f51c054c20058ae207baaac
  5. Affected versionversion=79e5e6addbb18bf56075f0ff552094a28636dd03 <73f34d609397805c20d6b2ef5c07a4cbf7c4d63a
  6. Affected versionversion=79e5e6addbb18bf56075f0ff552094a28636dd03 <8a3637027ceeba4ca5e500b23cb7d24c25592513
  7. Affected versionversion=79e5e6addbb18bf56075f0ff552094a28636dd03 <a15e9c175f783298c4ee48146be6841335400406
  8. Affected versionversion=79e5e6addbb18bf56075f0ff552094a28636dd03 <a18a42e77545afcacd6a2b8d9fc16191b87454df
  9. Affected versionversion=79e5e6addbb18bf56075f0ff552094a28636dd03 <de8da1063cce9234d55c8270d9bdf4cf84411c80

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.15; version=79e5e6addbb18bf56075f0ff552094a28636dd03 <3eab654f5d199ecd45403c6588cda63e491fcfca; version=79e5e6addbb18bf56075f0ff552094a28636dd03 <4a3c18cde02e35aba87e0ad5672b3e1c72dda5a4; version=79e5e6addbb18bf56075f0ff552094a28636dd03 <70f2b28b5243df557f51c054c20058ae207baaac; version=79e5e6addbb18bf56075f0ff552094a28636dd03 <73f34d609397805c20d6b2ef5c07a4cbf7c4d63a; version=79e5e6addbb18bf56075f0ff552094a28636dd03 <8a3637027ceeba4ca5e500b23cb7d24c25592513; version=79e5e6addbb18bf56075f0ff552094a28636dd03 <a15e9c175f783298c4ee48146be6841335400406; version=79e5e6addbb18bf56075f0ff552094a28636dd03 <a18a42e77545afcacd6a2b8d9fc16191b87454df; version=79e5e6addbb18bf56075f0ff552094a28636dd03 <de8da1063cce9234d55c8270d9bdf4cf84411c80

Published CVSS scores

7.1CanonicalCVSS: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

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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