Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Fix double free in dma-buf feature The error path through vfio_pci_core_feature_dma_buf() ignores its own advice to only use dma_buf_put() after dma_buf_export(), instead falling through the entire unwind chain. In the unlikely event that we encounter file descriptor exhaustion, this can result in an unbalanced refcount on the vfio device and double free of allocated objects. Avoid this by moving the "put" directly into the error path and return the errno rather than entering the unwind chain.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.19, < 6.19.11 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/83ad334afc9a645cef1062f5346526b1e36d6516Patch
- https://git.kernel.org/stable/c/e98137f0a874ab36d0946de4707aa48cb7137d1cPatch
FAQ
What is CVE-2026-31468?
CVE-2026-31468 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Fix double free in dma-buf feature The error path through vfio_pci_core_feature_dma_buf() ignores its own advice to only...
How severe is CVE-2026-31468?
CVE-2026-31468 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-31468?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.