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Vulnerabilities

Vulnerability · CVE-2026-31749

In the Linux kernel, the following vulnerability has been resolved: comedi: ni_atmio16d: Fix invalid clean-up after failed attach If the driver's COMEDI "attach" handl…

Published May 1, 2026 · catalog updated Jun 17, 2026 · linux kernel

Check if you run it

No confirmed exploitation is on record for CVE-2026-31749. EPSS is 0.16%. Act only if a listed version of linux kernel is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.16%
Remediation
Advisory link
Affected products
cpe linux/linux kernel

In the Linux kernel, the following vulnerability has been resolved: comedi: ni_atmio16d: Fix invalid clean-up after failed attach If the driver's COMEDI "attach" handler function ( ) returns an error, the COMEDI core will call the driver's "detach" handler function ( ) to clean up. This calls unconditionally, but depending on where the error occurred in the attach handler, the device may not have been sufficiently initialized to call . It uses as the I/O port base address and as the pointer to the COMEDI device's private data structure. may still be set to its initial value of 0, which would result in undesired writes to low I/O port addresses. may still be , which would result in null pointer dereferences. Fix by checking that is valid (non-null) before calling . This implies that was set correctly since that is set up before .

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe linux/linux kernel7.0

How to fix CVE-2026-31749

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-31749. EPSS is 0.16%. Act only if a listed version of linux kernel is installed.

Which versions are affected?

Compare what you have installed with linux/linux kernel 7.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-476: NULL Pointer Dereference. EPSS 0.16%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 1, 2026 · NIST NVD

    Detected

    In the Linux kernel, the following vulnerability has been resolved: comedi: ni_atmio16d: Fix invalid clean-up after failed attach If the driver's COMEDI "attach" handler function ( ) returns an error, the COMEDI core will call the driver's "detach" handler function ( ) to clean up. This calls unconditionally, but depending on where the error occurred in the attach handler, the device may not have

  2. Jun 17, 2026 · NIST NVD

    Updated

    In the Linux kernel, the following vulnerability has been resolved: comedi: ni_atmio16d: Fix invalid clean-up after failed attach If the driver's COMEDI "attach" handler function ( ) returns an error, the COMEDI core will call the driver's "detach" handler function ( ) to clean up. This calls unconditionally, but depending on where the error occurred in the attach handler, the device may not have

Sources

  • CVE.orgVulnerability recordCVE-2026-31749

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-31749

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2026-31749

    In the Linux kernel, the following vulnerability has been resolved: comedi: ni_atmio16d: Fix invalid clean-up after failed attach If the driver's COMEDI "attach" handler function ( ) returns an error, the COMEDI core will call the driver's "detach" handler fun

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.