CVE-2025-39755

System interruption via unset PCMCIA driver name

Published Apr 18, 2025 · Updated May 11, 2026

NULL pointer dereference in Linux's cb7210 driver in 6.13 through 6.13.10 and 6.14 through 6.14.1 allows local users to cause a kernel Oops. The registration path initializes only pcmcia_driver.drv.name, leaving pcmcia_driver.name NULL when pcmcia_register_driver passes it to strcmp. A local low-privileged context and registration of the staging cb7210 PCMCIA GPIB driver are required; the documented consequence is availability-only interruption.

CVSS severity5.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Linux's cb7210 driver in 6.13 through 6.13.10 and 6.14 through 6.14.1 allows local users to cause a kernel Oops. The registration path initializes only pcmcia_driver.drv.name, leaving pcmcia_driver.name NULL when pcmcia_register_driver passes it to strcmp. A local low-privileged context and registration of the staging cb7210 PCMCIA GPIB driver are required; the documented consequence is availability-only interruption.

The record

CVE
CVE-2025-39755
Published
Apr 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 18, 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=6.13
  2. Affected versionversion=e9dc69956d4d9bf4a81d35995ce9229ff5e4cad5 <7ec50077d7f6647cb6ba3a2a20a6c26f51259c7d
  3. Affected versionversion=e9dc69956d4d9bf4a81d35995ce9229ff5e4cad5 <c1baf6528bcfd6a86842093ff3f8ff8caf309c12
  4. Affected versionversion=e9dc69956d4d9bf4a81d35995ce9229ff5e4cad5 <c82ae06f49e70d1c14ee9c76c392345856d050c9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.13; version=e9dc69956d4d9bf4a81d35995ce9229ff5e4cad5 <7ec50077d7f6647cb6ba3a2a20a6c26f51259c7d; version=e9dc69956d4d9bf4a81d35995ce9229ff5e4cad5 <c1baf6528bcfd6a86842093ff3f8ff8caf309c12; version=e9dc69956d4d9bf4a81d35995ce9229ff5e4cad5 <c82ae06f49e70d1c14ee9c76c392345856d050c9

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/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

CWE-476NULL Pointer Dereference
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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