How severe is CVE-2025-38314?

CVE-2025-38314 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-38314 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-38314?

CVE-2025-38314 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-38314?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-38314 have an EU (EUVD) identifier?

Yes. CVE-2025-38314 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-20934.

When was CVE-2025-38314 published?

CVE-2025-38314 was published on 2025-07-10 and last updated on 2026-06-17.

CVE-2025-38314

CVE-2025-38314 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-20934
Affected product: Linux Linux Kernel
Published: 2025-07-10
Last modified: 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: virtio-pci: Fix result size returned for the admin command completion The result size returned by virtio_pci_admin_dev_parts_get() is 8 bytes larger than the actual result data size. This occurs because the result_sg_size field of the command is filled with the result length from virtqueue_get_buf(), which includes both the data size and an additional 8 bytes of status. This oversized result size causes two issues: 1. The state transferred to the destination includes 8 bytes of extra data at the end. 2. The allocated buffer in the kernel may be smaller than the returned size, leading to failures when reading beyond the allocated size. The commit fixes this by subtracting the status size from the result of virtqueue_get_buf(). This fix has been tested through live migrations with virtio-net, virtio-net-transitional, and virtio-blk devices.

Frequently asked questions

What is CVE-2025-38314?: In the Linux kernel, the following vulnerability has been resolved: virtio-pci: Fix result size returned for the admin command completion The result size returned by virtio_pci_admin_dev_parts_get() is 8 bytes larger than the actual result data size. This occurs because the result_sg_size field of the command is filled with the result length from virtqueue_get_buf(), which includes both the data size and an additional 8 bytes of status. This oversized result size causes two issues: 1. The state transferred to the destination includes 8 bytes of extra data at the end. 2. The allocated buffer in the kernel may be smaller than the returned size, leading to failures when reading beyond the allocated size. The commit fixes this by subtracting the status size from the result of virtqueue_get_buf(). This fix has been tested through live migrations with virtio-net, virtio-net-transitional, and virtio-blk devices.
How severe is CVE-2025-38314?: CVE-2025-38314 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-38314 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-38314?: CVE-2025-38314 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-38314?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-38314 have an EU (EUVD) identifier?: Yes. CVE-2025-38314 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-20934.
When was CVE-2025-38314 published?: CVE-2025-38314 was published on 2025-07-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

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