CVE-2025-38250: Bluetooth: hci_core: Fix use-after-free in vhci_flush()
CSIRTS triage
- What
- Use-after-free in vhci_flush() Bluetooth function causes heap corruption and potential code execution.
- Who is affected
- Systems running Linux kernel with Bluetooth virtual HCI driver enabled or with active Bluetooth devices.
- Urgency
- High severity; CVSS 7.3 and use-after-free vulnerability enables potential privilege escalation or code execution.
- Action
- Apply kernel security patch immediately to fix use-after-free in vhci_flush().
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-38250
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2025-382500.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2025-38250 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilities allow Denial of Servicecert-bund
- unknownUSN-8668-1: Linux kernel (GCP) vulnerabilitiesubuntu
- unknownUbuntu Linux Kernel Multiple Vulnerabilitieshkcert
- unknownUSN-8620-4: Linux kernel (Intel IoTG) vulnerabilitiesubuntu
- unknownUSN-8620-3: Linux kernel (Intel IoTG) vulnerabilitiesubuntu
- unknownMultiple vulnerabilities in Ubuntu Linux kernel (July 31, 2026)cert-fr-avis
- unknownUSN-8620-2: Linux kernel (Azure FIPS) vulnerabilitiesubuntu
- highUSN-8620-1: Linux kernel vulnerabilitiesubuntu
- highUSN-8610-1: Linux kernel (Azure CVM) vulnerabilitiesubuntu
- highUSN-8575-3: Linux kernel vulnerabilitiesubuntu
- highUSN-8576-2: Linux kernel (NVIDIA Tegra) vulnerabilitiesubuntu
- highUSN-8575-2: Linux kernel vulnerabilitiesubuntu
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