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Vulnerabilities

Vulnerability · CVE-2026-93683

A flaw was found in the DPDK vhost library.

Published Oct 14, 2026 · catalog updated Oct 14, 2026 · Red Hat Fast Datapath for RHEL 10

Check if you run it

No confirmed exploitation is on record for CVE-2026-93683. EPSS is 0.10%. Act only if a listed version of Red Hat Fast Datapath for RHEL 10 is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.10%
Remediation
Advisory link
Affected products
Debian:12 dpdk · Debian:13 dpdk · Debian:14 dpdk · vendor Red Hat Fast Datapath for RHEL 10 · vendor Red Hat Fast Datapath for RHEL 8

A flaw was found in the DPDK vhost library. When handling a virtio indirect descriptor table, the host reads the table length more than once from guest memory and can allocate a host copy before validating that length. A guest that changes the length between those reads, or that supplies an out-of-range next index on a small host copy in the vDPA relay path, can cause the host vhost process to walk past the validated mapping or heap copy. That can crash or disrupt the vhost process. Out-of-bounds bytes are consumed as descriptor fields for GPA translation and are not returned to the guest as payload. This is a residual issue in the non-contiguous indirect descriptor copy path introduced as part of the CVE-2018-1059 fix.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Debian:12 dpdk22.11.1-2, 22.11.11-0+deb12u1, 22.11.2-1
  • Debian:13 dpdk24.11.2-2, 24.11.3-1, 24.11.3-1~deb13u1
  • Debian:14 dpdk24.11.2-2, 24.11.3-1, 24.11.3-1~deb13u1
  • vendor Red Hat Fast Datapath for RHEL 10version unspecified
  • vendor Red Hat Fast Datapath for RHEL 8version unspecified

How to fix CVE-2026-93683

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-93683. EPSS is 0.10%. Act only if a listed version of Red Hat Fast Datapath for RHEL 10 is installed.

Which versions are affected?

Compare what you have installed with 22.11.1-2, 22.11.11-0+deb12u1, 22.11.2-1, 24.11.2-2, 24.11.3-1, 24.11.3-1~deb13u1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition. EPSS 0.10%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 14, 2026 · NIST NVD

    Detected

    A flaw was found in the DPDK vhost library. When handling a virtio indirect descriptor table, the host reads the table length more than once from guest memory and can allocate a host copy before validating that length. A guest that changes the length between those reads, or that supplies an out-of-range next index on a small host copy in the vDPA relay path, can cause the host vhost process to wal

  2. Oct 14, 2026 · NIST NVD

    Updated

    A flaw was found in the DPDK vhost library. When handling a virtio indirect descriptor table, the host reads the table length more than once from guest memory and can allocate a host copy before validating that length. A guest that changes the length between those reads, or that supplies an out-of-range next index on a small host copy in the vDPA relay path, can cause the host vhost process to wal

  3. Oct 14, 2026 · NIST NVD

    Updated

    A flaw was found in the DPDK vhost library. When handling a virtio indirect descriptor table, the host reads the table length more than once from guest memory and can allocate a host copy before validating that length. A guest that changes the length between those reads, or that supplies an out-of-range next index on a small host copy in the vDPA relay path, can cause the host vhost process to wal

  4. Oct 14, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    A flaw was found in the DPDK vhost library. When handling a virtio indirect descriptor table, the host reads the table length more than once from guest memory and can allocate a host copy before validating that length. A guest that changes the length between those reads, or that supplies an out-of-range next index on a small host copy in the vDPA relay path, can cause the host vhost process to wal

Sources

  • CVE.orgVulnerability recordCVE-2026-93683

    A flaw was found in the DPDK vhost library. When handling a virtio indirect descriptor table, the host reads the table length more than once from guest memory and can allocate a host copy before validating that length. A guest that changes the length between those reads, or that

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-93683

    30-day exploitation probability 0.1%

    first.org
  • NIST NVDVulnerability recordCVE-2026-93683

    A flaw was found in the DPDK vhost library. When handling a virtio indirect descriptor table, the host reads the table length more than once from guest memory and can allocate a host copy before validating that length. A guest that changes the length between those reads, or that

    nvd.nist.gov
  • OpenSSF OSV / OSV ScannerPackage advisoryDEBIAN-CVE-2026-93683
    osv.dev

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.