CVE-2026-86856

A flaw was found in DPDK lib/vhost vhost-crypto. Integer overflow in chain length checks and missing length checks on the RSA path can overflow a host buffer in the vhost-crypto backend.

A flaw in DPDK lib/vhost vhost-crypto causes the indirect-descriptor snapshot to double-fetch a guest descriptor next index. A malicious guest can exploit this to cause an out-of-bounds access in the host backend.

A flaw was found in DPDK lib/vhost vhost-crypto. Write-back chain cleanup can follow an uninitialized next pointer when mapping a guest descriptor fails, causing the host vhost-crypto process to hang or crash.

A flaw was found in DPDK lib/vhost vhost-crypto. A guest can supply an avail-ring descriptor index that is used without bounds checking, causing an out-of-bounds write in the host vhost-crypto backend.

A flaw was found in DPDK lib/vhost vhost-crypto. Session cleanup can leave a stale cached session pointer, and the data path does not check the session type before attaching it, leading to use-after-free or type confusion in the host vhost-crypto backend.

A flaw in DPDK lib/vhost: the VDUSE handler fails to invalidate vring pointers when the IOTLB is invalidated, leading to a use-after-unmap condition.

A flaw was found in DPDK lib/vhost. A guest with runt RX descriptors can underflow the copy length in vhost enqueue, causing a denial of service in a shared vhost backend such as OVS-DPDK.

A flaw was found in DPDK lib/vhost where a guest can desynchronize virtqueue size from inflight descriptor table size, causing an out-of-bounds write in the host vhost process.

A flaw was found in DPDK lib/vhost where a double-offset bug in vhost log mapping calculation can lead to incorrect memory access.

A flaw was found in DPDK lib/vhost where a TOCTOU double-fetch of control-queue descriptors allows a heap buffer overflow with attacker-controlled content in the VDUSE control-queue handler.