CVE-2025-38286

Kernel disclosure and crash via unchecked alias index

Published Jul 10, 2025 · Updated May 11, 2026

Out-of-bounds read in the AT91 GPIO probe in Linux 3.8 through 6.15 allows local users to expose kernel memory or crash the system. at91_gpio_probe uses a negative result from of_alias_get_id as an index into gpio_chips because it checks only the upper bound, and that BUG check can be compiled out. Reachability requires the AT91 pin-control driver to probe a device-tree GPIO node without a valid gpio alias.

CVSS severity7.1
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

Out-of-bounds read in the AT91 GPIO probe in Linux 3.8 through 6.15 allows local users to expose kernel memory or crash the system. at91_gpio_probe uses a negative result from of_alias_get_id as an index into gpio_chips because it checks only the upper bound, and that BUG check can be compiled out. Reachability requires the AT91 pin-control driver to probe a device-tree GPIO node without a valid gpio alias.

The record

CVE
CVE-2025-38286
Published
Jul 10, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 10, 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=3.8
  2. Affected versionversion=6732ae5cb47c4f9a72727585956f2a5e069d1637 <264a5cf0c422e65c94447a1ebebfac7c92690670
  3. Affected versionversion=6732ae5cb47c4f9a72727585956f2a5e069d1637 <288c39286f759314ee8fb3a80a858179b4f306da
  4. Affected versionversion=6732ae5cb47c4f9a72727585956f2a5e069d1637 <2ecafe59668d2506a68459a9d169ebe41a147a41
  5. Affected versionversion=6732ae5cb47c4f9a72727585956f2a5e069d1637 <762ef7d1e6eefad9896560bfcb9bcf7f1b6df9c1
  6. Affected versionversion=6732ae5cb47c4f9a72727585956f2a5e069d1637 <db5665cbfd766db7d8cd0e5fd6e3c0b412916774
  7. Affected versionversion=6732ae5cb47c4f9a72727585956f2a5e069d1637 <e02e12d6a7ab76c83849a4122785650dc7edef65
  8. Affected versionversion=6732ae5cb47c4f9a72727585956f2a5e069d1637 <eb435bc4c74acbb286cec773deac13d117d3ef39
  9. Affected versionversion=6732ae5cb47c4f9a72727585956f2a5e069d1637 <f1c1fdc41fbf7e308ced9c86f3f66345a3f6f478

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.8; version=6732ae5cb47c4f9a72727585956f2a5e069d1637 <264a5cf0c422e65c94447a1ebebfac7c92690670; version=6732ae5cb47c4f9a72727585956f2a5e069d1637 <288c39286f759314ee8fb3a80a858179b4f306da; version=6732ae5cb47c4f9a72727585956f2a5e069d1637 <2ecafe59668d2506a68459a9d169ebe41a147a41; version=6732ae5cb47c4f9a72727585956f2a5e069d1637 <762ef7d1e6eefad9896560bfcb9bcf7f1b6df9c1; version=6732ae5cb47c4f9a72727585956f2a5e069d1637 <db5665cbfd766db7d8cd0e5fd6e3c0b412916774; version=6732ae5cb47c4f9a72727585956f2a5e069d1637 <e02e12d6a7ab76c83849a4122785650dc7edef65; version=6732ae5cb47c4f9a72727585956f2a5e069d1637 <eb435bc4c74acbb286cec773deac13d117d3ef39; version=6732ae5cb47c4f9a72727585956f2a5e069d1637 <f1c1fdc41fbf7e308ced9c86f3f66345a3f6f478

Published CVSS scores

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 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

CWE-125Out-of-bounds Read
T1499Endpoint Denial of Service

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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