CVE-2026-81000

A flaw was found in the Linux kernel's TUN/TAP driver. An integer underflow vulnerability exists in the tungetuser function when processing oversized headroom requests. This can occur if Open vSwitch OVS propagates an excessively large headroom request to the TUN or TAP device. Successful...

CVE-2026-80905 net: tap: fix wrong transport_header when sending VLAN-tagged frame

In the Linux kernel, the following vulnerability has been resolved: net: tap: fix wrong transportheader when sending VLAN-tagged frame In tapgetuserxdp, when processing a VLAN-tagged frame e.g. ETHP8021Q, skbsetnetworkheader is called first to advance networkheader past the VLAN tag to the inner...

CVE-2026-80905

In the Linux kernel, the following vulnerability has been resolved: net: tap: fix wrong transportheader when sending VLAN-tagged frame In tapgetuserxdp, when processing a VLAN-tagged frame e.g. ETHP8021Q, skbsetnetworkheader is called first to advance networkheader past the VLAN tag to the inner...

CVE-2026-74684

This vulnerability is a NULL pointer dereference in the Linux kernel's net: tap module, specifically in tap_get_user_xdp(). When the vhost TX path passes an XDP buffer containing a GSO virtio-net header with the protocol field set to zero, tun_vnet_hdr_to_skb() can reach dev_parse_header_protocol...

CVE-2026-74684 net: tap: set skb->dev before parsing virtio net header in tap_get_user_xdp()

In the Linux kernel, the following vulnerability has been resolved: net: tap: set skb-dev before parsing virtio net header in tapgetuserxdp The commit 4f61f133f354 "net: tap: NULL pointer derefence in devparseheaderprotocol when skb-dev is null" fixed a crash in tapgetuser by assigning skb-dev...

PT-2026-79689

In the Linux kernel, the following vulnerability has been resolved: net: tap: set skb-dev before parsing virtio net header in tap get user xdp The commit 4f61f133f354 "net: tap: NULL pointer derefence in dev parse header protocol when skb-dev is null" fixed a crash in tap get user by assigning...

Linux Distros Unpatched Vulnerability : CVE-2026-74684

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net: tap: set skb-dev before parsing virtio net header in tapgetuserxdp The commit 4f61f133f354 net: tap: NULL pointer derefence in devparseheaderprotocol when...

CVE-2026-52937

A flaw was found in the Linux kernel's tap driver. This vulnerability allows an attacker to potentially disclose sensitive kernel stack memory contents to userspace. The flaw occurs in the tapioctl function when handling the SIOCGIFHWADDR command, where uninitialized portions of a stack-allocated...

AZL-90387 CVE-2026-52937 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: tap: fix stack info leak in tapioctl SIOCGIFHWADDR In the SIOCGIFHWADDR path, tapioctl copies 16 bytes of an uninitialised on-stack struct sockaddrstorage to userspace via ifrhwaddr, but netifgetmacaddress only writes safamily an...

UBUNTU-CVE-2026-52937

In the Linux kernel, the following vulnerability has been resolved: tap: fix stack info leak in tapioctl SIOCGIFHWADDR In the SIOCGIFHWADDR path, tapioctl copies 16 bytes of an uninitialised on-stack struct sockaddrstorage to userspace via ifrhwaddr, but netifgetmacaddress only writes safamily an...

CVE-2026-52937 tap: fix stack info leak in tap_ioctl() SIOCGIFHWADDR

In the Linux kernel, the following vulnerability has been resolved: tap: fix stack info leak in tapioctl SIOCGIFHWADDR In the SIOCGIFHWADDR path, tapioctl copies 16 bytes of an uninitialised on-stack struct sockaddrstorage to userspace via ifrhwaddr, but netifgetmacaddress only writes safamily an...

CVE-2026-52937 tap: fix stack info leak in tap_ioctl() SIOCGIFHWADDR

In the Linux kernel, the following vulnerability has been resolved: tap: fix stack info leak in tapioctl SIOCGIFHWADDR In the SIOCGIFHWADDR path, tapioctl copies 16 bytes of an uninitialised on-stack struct sockaddrstorage to userspace via ifrhwaddr, but netifgetmacaddress only writes safamily an...

CVE-2026-46320

A flaw was found in the Linux kernel's tap driver. This vulnerability occurs in the tapgetuserxdp function, where allocated memory pages are not properly freed when processing rejected network frames. Specifically, if a frame is shorter than the expected Ethernet header length or if memory...

CVE-2026-46320

The CVE-2026-46320 vulnerability affects the Linux kernel tap driver where memory pages allocated for frames in vhost_net_xdp() are not freed on error paths. Specifically, tap_get_user_xdp() may reject frames shorter than ETH_HLEN (-EINVAL) or fail build_skb() (-ENOMEM), but both error paths jump...

CVE-2026-46320 tap: free page on error paths in tap_get_user_xdp()

In the Linux kernel, the following vulnerability has been resolved: tap: free page on error paths in tapgetuserxdp tapgetuserxdp rejects a frame shorter than ETHHLEN with -EINVAL, and returns -ENOMEM when buildskb fails. Both paths jump to the err label without freeing the page that...

CVE-2026-46320

In the Linux kernel, the following vulnerability has been resolved: tap: free page on error paths in tapgetuserxdp tapgetuserxdp rejects a frame shorter than ETHHLEN with -EINVAL, and returns -ENOMEM when buildskb fails. Both paths jump to the err label without freeing the page that...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-001725)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001725 advisory. A double-free flaw was found in the Linux kernels TUN/TAP device driver functionality in how a user registers the device when the registernetdevice function fails...

EUVD-2022-55342

Malicious code in bioql PyPI...

Linux Distros Unpatched Vulnerability : CVE-2022-4744

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A double-free flaw was found in the Linux kernel's TUN/TAP device driver functionality in how a user registers the device when the registernetdevice function...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: net: tap: NULL pointer derefence in devparseheaderprotocol when skb-dev is null CVE-2022-50073 In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Treat NX as a valid SPTE bit for NPT...