CVE-2025-37974: Linux kernel · s390/pci: Fix missing check for zpci_create_device() error return
Source GCVE Database
Not known to be exploited · CVSS 5.5 Medium.
Data as of 13 Nov 2026, 18:50 UTC
Thin evidence
One scorer or noneCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 20 May 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
- nvd.nist.gov/vuln/detail/CVE-2025-37974 (opens in a new tab)
- git.kernel.org/stable/c/2769b718e164df983c20c314b263a71a699be6cd (opens in a new tab)
- git.kernel.org/stable/c/42420c50c68f3e95e90de2479464f420602229fc (opens in a new tab)
- git.kernel.org/stable/c/be54b750c333a9db7c3b3686846bb06b07b011fe (opens in a new tab)