CVE-2026-93683
A flaw was found in the DPDK vhost library.
Published Oct 14, 2026 · updated Oct 14, 2026 · Red Hat Fast Datapath for RHEL 10
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.
Timeline
Detection, updates, and resolution for this record.
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
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
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
Oct 14, 2026 · OSV.dev
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
Affected
- 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
Sources
- CVE.orgCVE-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 - NIST NVDCVE-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 - OSV.devDEBIAN-CVE-2026-93683osv.dev