UBUNTU-CVE-2026-68411

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211hwsim: clamp virtio RX length before skbput hwsimvirtiorxwork passes the virtqueue used-ring length reported by the device straight to skbput on a fixed-size receive skb. A backend reporting a length larger than the...

EUVD-2026-55597

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211hwsim: clamp virtio RX length before skbput hwsimvirtiorxwork passes the virtqueue used-ring length reported by the device straight to skbput on a fixed-size receive skb. A backend reporting a length larger than the...

CVE-2026-68411

The CVE affects the Linux kernel’s wifi/mac80211_hwsim path. In hwsim_virtio_rx_work(), the virtqueue used-ring length reported by the device could be passed directly to skb_put() on a fixed-size receive skb, allowing skb_over_panic() and a host-triggerable guest panic (DoS) when length exceeds t...

CVE-2026-68411 wifi: mac80211_hwsim: clamp virtio RX length before skb_put

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211hwsim: clamp virtio RX length before skbput hwsimvirtiorxwork passes the virtqueue used-ring length reported by the device straight to skbput on a fixed-size receive skb. A backend reporting a length larger than the...

CVE-2026-68411 wifi: mac80211_hwsim: clamp virtio RX length before skb_put

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211hwsim: clamp virtio RX length before skbput hwsimvirtiorxwork passes the virtqueue used-ring length reported by the device straight to skbput on a fixed-size receive skb. A backend reporting a length larger than the...

CVE-2026-68255 drm/virtio: bound EDID block reads to the response buffer

In the Linux kernel, the following vulnerability has been resolved: drm/virtio: bound EDID block reads to the response buffer virtiogetedidblock validates the read offset only against the device-supplied resp-size field, never against the fixed-size resp-edid array. The EDID block index is driven...

EUVD-2026-55356

In the Linux kernel, the following vulnerability has been resolved: drm/virtio: bound EDID block reads to the response buffer virtiogetedidblock validates the read offset only against the device-supplied resp-size field, never against the fixed-size resp-edid array. The EDID block index is driven...

CVE-2026-68255 drm/virtio: bound EDID block reads to the response buffer

In the Linux kernel, the following vulnerability has been resolved: drm/virtio: bound EDID block reads to the response buffer virtiogetedidblock validates the read offset only against the device-supplied resp-size field, never against the fixed-size resp-edid array. The EDID block index is driven...

CVE-2026-68255

Summary: CVE-2026-68255 affects the Linux kernel DRM/virtio EDID handling. The function virtio_get_edid_block() validates reads only against the device-supplied resp->size, not against the fixed-size resp->edid array. An attacker-controlled virtio-gpu backend can advertise a large size with...

Astra Linux – Vulnerability in Qemu

A flaw was discovered in QEMU. When reading input audio from the virtio-snd device’s input callback, the virtiosndpcmincb function did not check whether the iov could accommodate the data buffer, potentially leading to a heap out-of-bounds write. This issue persists due to an incomplete fix for...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: vsock/virtio: Only linear skb values are coalesced. In vsock/virtio common, attempts to coalesce buffers in the rx queue: if a linear skb with a spare tail room is followed by a small skb whose length is limited by GOODCOPYLEN...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: virtio-net: The issue of checking the received length in large packets has been fixed. Since commit 4959aebba8c0 “virtio-net: Use the MTU size as the buffer length for large packets”, when the guest gso is disabled, the allocated...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: crypto: virtio – Add spinlock protection with virtqueue notification When a virtual machine boots with a virtio-crypto PCI device and a built-in backend, run the openssl benchmark command with multiple processes. For example:...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v3-its: Avoid truncating memory addresses. On 32-bit machines with CONFIGARMLPAE, it is possible for lowmem allocations to be backed by addresses located physically beyond the 32-bit address limit. This issue was...

Astra Linux – Vulnerability in Qemu

An integer overflow vulnerability was discovered in the virtio-snd device through PCMINFO requests from the guest. A malicious guest can provide out-of-bounds stream counts, potentially leading to unbounded memory allocation on the host and a denial of service condition...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: cap TX credit to local buffer size The virtio transport derives its TX credit directly from peerbufalloc, which is set based on the remote endpoint’s SOVMSOCKETSBUFFERSIZE value. On the host side, this means that th...

Astra Linux – Vulnerability in Qemu

A flaw was discovered in the virtio-crypto device of QEMU. A malicious guest operating system can exploit a missing length limit in the AKCIPHER path, resulting in uncontrolled memory allocation. This can lead to a denial of service attack on the host system, causing the QEMU process to terminate...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: Fixed a potential underflow in virtiotransportgetcredit. The credit calculation in virtiotransportgetcredit uses unsigned arithmetic: c ret = vvs-peerbufalloc - vvs-txcnt - vvs-peerfwdcnt; If the peer reduces its...

Linux Distros Unpatched Vulnerability : CVE-2026-68255

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - drm/virtio: bound EDID block reads to the response buffer virtiogetedidblock validates the read offset only against the device-supplied resp-size field, never...

Linux Distros Unpatched Vulnerability : CVE-2026-68411

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - wifi: mac80211hwsim: clamp virtio RX length before skbput hwsimvirtiorxwork passes the virtqueue used-ring length reported by the device straight to skbput on a...