CVE-2025-37838: linux-gcp, linux-gcp-6.8, linux-gke vulnerabilities
Affects Linux kernelSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · fixed in 6.8.0-1043.46~22.04.1 : patch Linux kernel soon.
Data as of 31 Oct 2026, 01:10 UTC
Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
- Patch
- Available – fixed in 6.8.0-1043.46~22.04.1, 6.8.0-1043.46, 6.8.0-1039.44
Exploitation evidence
Disclosed: evidence found.
CVE published 7 Nov 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 30 Oct 2026.
What to do
Upgrade the Ubuntu to 6.8.0-1043.46~22.04.1 (linux-gcp-6.8 package) or 6.8.0-1043.46 (linux-gcp package) or 6.8.0-1039.44 (linux-gke package).
Patches and advisories
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 24.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 22.04 LTSlinux-gcp-6.8pkg:deb/ubuntu/linux-gcp-6.8?arch=source&distro=jammyOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A patch is available and should be applied promptly. Users should update their systems to the fixed package versions (6.8.0-1039.44, 6.8.0-1043.46, or 6.8.0-1043.46~22.04.1 depending on their release) as detailed in the Ubuntu security notice USN-7864-1. After updating, a system reboot is required to activate the fixes. Due to an ABI change, all third-party kernel modules must be recompiled and reinstalled. Standard system upgrades will handle this automatically unless kernel metapackages have been manually removed.
Description
Several security vulnerabilities were discovered in the Linux kernel used in Google Cloud Platform (GCP) and Google Kubernetes Engine (GKE) systems, including a flaw known as VMSCAPE that allows insufficient branch predictor isolation between a guest VM and a userspace hypervisor. This could enable an attacker in a guest VM to potentially expose sensitive information from the host OS. Additional flaws affect the HSI, I2C, Bluetooth, and Timer subsystems. These issues could allow an attacker to compromise the system. Fixes have been released and require a system update and reboot.
References
- ubuntu.com/security/notices/USN-7864-1 (opens in a new tab)
- ubuntu.com/security/CVE-2025-37838 (opens in a new tab)
- ubuntu.com/security/CVE-2025-38118 (opens in a new tab)
- ubuntu.com/security/CVE-2025-38352 (opens in a new tab)
- ubuntu.com/security/CVE-2025-38425 (opens in a new tab)
- ubuntu.com/security/CVE-2025-40300 (opens in a new tab)