CVE-2025-37985: Linux kernel · USB: wdm: close race between wdm_open and wdm_wwan_port_stop
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 5 Nov 2026, 21:51 UTC
Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or noneExploitation 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 5 Nov 2026.
What to do
AI-suggested
A fix for this vulnerability has been implemented in the Linux kernel. Users should apply the official Linux kernel updates that include this fix. Since no specific patch versions are provided, users should consult the Linux kernel vendor advisories for the exact fixed versions and update accordingly.
Description
A race condition vulnerability in the Linux kernel's USB wdm driver involving the close operation has been resolved. The issue occurs between the wdm_open and wdm_wwan_port_stop functions, where clearing the WDM_WWAN_IN_USE flag prematurely can lead to opening a character device with poisoned USB Request Blocks (URBs).
References
- git.kernel.org/stable/c/b02a3fef3e8c8fe5a0a266f7a14f38cc608fb167 (opens in a new tab)
- git.kernel.org/stable/c/217fe1fc7d112595a793e02b306710e702eac492 (opens in a new tab)
- git.kernel.org/stable/c/54f7f8978af19f899dec80bcc71c8d4855dfbd72 (opens in a new tab)
- git.kernel.org/stable/c/52ae15c665b5fe5876655aaccc3ef70560b0e314 (opens in a new tab)
- git.kernel.org/stable/c/e3c9adc69357fcbe6253a2bc2588ee4bbaaedbe9 (opens in a new tab)
- git.kernel.org/stable/c/c1846ed4eb527bdfe6b3b7dd2c78e2af4bf98f4f (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/05/msg00045.html (opens in a new tab)