What is CVE-2026-31468?

CVE-2026-31468 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 6.19 onward and patched in 6.19.11 and 7.0. CVE-2026-31468 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-31468?

CVE-2026-31468 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2026-31468?

Yes, CVE-2026-31468 has been patched. Fixed versions include 6.19.11 and 7.0. If you are running Linux kernel 6.19 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-31468 actively exploited?

CVE-2026-31468 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-31468

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 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.

Package Linux Kernel

Published 2026-04-22

Last modified 2026-05-07

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-415

CVE-2026-31468 is classified as CWE-415

See CWE-415 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 6.19 and later are affected. Fixed in 6.19.11, 7.0 and their respective stable series.

Affected from

≥ 6.19

Fixed in

✓ 6.19.11 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-31468 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/83ad334afc9a645cef1062f5346526b1e36d6516
Patch
Kernel patch commit
https://git.kernel.org/stable/c/e98137f0a874ab36d0946de4707aa48cb7137d1c
Patch

Details

CVE ID CVE-2026-31468

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-04-22

Modified 2026-05-07

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-31468?

CVE-2026-31468 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 6.19 onward and has been patched in 6.19.11 and 7.0. CVE-2026-31468 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-31468?

CVE-2026-31468 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2026-31468?

Yes — CVE-2026-31468 has been patched. Fixed versions include 6.19.11 and 7.0. If you are running Linux kernel 6.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-31468 actively exploited?

No — CVE-2026-31468 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.