CVE-2025-71145

Use-after-free via non-OF reference imbalance

Published Jan 23, 2026 · Updated Jan 23, 2026

Use-after-free in the Linux kernel ISP1301 USB PHY driver allows local users to access a released I2C device through a non-OF path. The isp1301_get_client() helper increments the returned I2C device's reference count only for OF lookups, while callers release it unconditionally. Reachability requires a non-OF configuration and a race with PHY-driver unbinding while the device is in use; no demonstrated end effect is published.

CVSS severity7.8
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

Use-after-free in the Linux kernel ISP1301 USB PHY driver allows local users to access a released I2C device through a non-OF path. The isp1301_get_client() helper increments the returned I2C device's reference count only for OF lookups, while callers release it unconditionally. Reachability requires a non-OF configuration and a race with PHY-driver unbinding while the device is in use; no demonstrated end effect is published.

The record

CVE
CVE-2025-71145
Published
Jan 23, 2026
Updated
Jan 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 23, 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=0c2b0e747010fa645342138d71339a0ecb823bb0 <43e58abad6c08c5f0943594126ef4cd6559aac0b
  2. Affected versionversion=21c7c83d592e6335bfb6d65608da3726f976bad4
  3. Affected versionversion=33c2e2a87313bc1afe9f7febbbb2014c431a2c5d <03bbdaa4da8c6ea0c8431a5011db188a07822c8a
  4. Affected versionversion=8481323710062051b3c42bff94ee5b18a2b496ca <75c5d9bce072abbbc09b701a49869ac23c34a906
  5. Affected versionversion=8bd518ea03b81eb7b4a734b7b901866c448f6c07 <5d3df03f70547d4e3fc10ed4381c052eff51b157
  6. Affected versionversion=c84117912bddd9e5d87e68daf182410c98181407 <b4b64fda4d30a83a7f00e92a0c8a1d47699609f3
  7. Affected versionversion=cefaad839a384a72331aedad927b1944fb6943dc <7501ecfe3e5202490c2d13dc7e181203601fcd69

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=0c2b0e747010fa645342138d71339a0ecb823bb0 <43e58abad6c08c5f0943594126ef4cd6559aac0b; version=21c7c83d592e6335bfb6d65608da3726f976bad4; version=33c2e2a87313bc1afe9f7febbbb2014c431a2c5d <03bbdaa4da8c6ea0c8431a5011db188a07822c8a; version=8481323710062051b3c42bff94ee5b18a2b496ca <75c5d9bce072abbbc09b701a49869ac23c34a906; version=8bd518ea03b81eb7b4a734b7b901866c448f6c07 <5d3df03f70547d4e3fc10ed4381c052eff51b157; version=c84117912bddd9e5d87e68daf182410c98181407 <b4b64fda4d30a83a7f00e92a0c8a1d47699609f3; version=cefaad839a384a72331aedad927b1944fb6943dc <7501ecfe3e5202490c2d13dc7e181203601fcd69

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.3SUSECVSS:4.0/AV:L/AC:H/AT:N/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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