CVE-2026-31468
HIGH EPSS 2.2%
Published Apr 22, 20262mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
Published Apr 22, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago
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 Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High
Threat Intelligence
EPSS Exploit Probability
2.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Weaknesses 1
CWE-415
Affected Products 6
References 2
- git.kernel.org https://git.kernel.org/stable/c/83ad334afc9a645cef1062f5346526b1e36d6516
- git.kernel.org https://git.kernel.org/stable/c/e98137f0a874ab36d0946de4707aa48cb7137d1c
Remediation
- git.kernel.org https://git.kernel.org/stable/c/83ad334afc9a645cef1062f5346526b1e36d6516
- git.kernel.org https://git.kernel.org/stable/c/e98137f0a874ab36d0946de4707aa48cb7137d1c