CVE-2026-99047: Linux kernel · gve: fix XSK buffer leak when rings are stopped
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 28 Oct 2026, 01:43 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Exploitation evidence
Disclosed: evidence found.
CVE published 23 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10linuxpkg:deb/ubuntu/linux?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10linux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10linux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10linux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10linux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10linux-oraclepkg:deb/ubuntu/linux-oracle?arch=source&distro=stonkingOther 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 fix is available that properly frees XSK buffers when stopping rings in the GVE driver. Users should update to patched versions of the Linux kernel that include this fix. No additional mitigation actions are indicated.
Description
A vulnerability in the Linux kernel's GVE driver causes a buffer leak of XSK buffers when rings are stopped. The issue occurs because GVE does not free XSK buffers when resetting ring state during queue stoppage, leading to resource leakage. This flaw has been observed in production environments and affects multiple specific Linux kernel versions.
References
- ubuntu.com/security/CVE-2026-99047 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-99047 (opens in a new tab)
- git.kernel.org/stable/c/506f9de069d07a72b9887ce3edd2fdf32f4953aa (opens in a new tab)
- git.kernel.org/stable/c/73670ddb91a4d22e1deb3efd962242de1ec48e90 (opens in a new tab)
- git.kernel.org/stable/c/7a7e6bbbf0586c1f62f0cc7d9a2877d8a5e5aaf7 (opens in a new tab)