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VulnerabilityPublished Updated

CVE-2025-37974: Linux kernel · s390/pci: Fix missing check for zpci_create_device() error return

Source GCVE Database

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Authoritative record:CVE-2025-37974

Not known to be exploited · CVSS 5.5 Medium.

Data as of 13 Nov 2026, 18:50 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 May 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

AI-suggested

A fix for this vulnerability is available in the Linux kernel. Users and administrators should apply the official kernel updates that include the patch for CVE-2025-37974 to ensure the missing error check is added. No additional mitigation steps are indicated beyond applying the patch.

Description

CVE-2025-37974 is a medium severity vulnerability in the Linux kernel's s390 PCI subsystem. It involves a missing error check for the return value of the zpci_create_device() function in the __clp_add() function. Without this check, an error pointer could be dereferenced, which may lead to a denial of service (system crash). This issue has been fixed by adding the missing error check to prevent improper handling of the device creation failure.

References

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