UBUNTU-CVE-2026-81000

In the Linux kernel, the following vulnerability has been resolved: net: tun: bound receive headroom tungetuser uses tun-align both as skb headroom and when choosing how much packet data to keep linear. OVS can propagate an oversized headroom request from another port to TUN or TAP. When align is...

CVE-2026-81000 net: tun: bound receive headroom

In the Linux kernel, the following vulnerability has been resolved: net: tun: bound receive headroom tungetuser uses tun-align both as skb headroom and when choosing how much packet data to keep linear. OVS can propagate an oversized headroom request from another port to TUN or TAP. When align is...

CVE-2026-81000

In the Linux kernel, the following vulnerability has been resolved: net: tun: bound receive headroom tungetuser uses tun-align both as skb headroom and when choosing how much packet data to keep linear. OVS can propagate an oversized headroom request from another port to TUN or TAP. When align is...

CVE-2026-81000

CVE-2026-81000 affects the Linux kernel TUN/TAP driver . The root cause is an integer underflow in tun_get_user(): when Open vSwitch (OVS) propagates an oversized headroom request from another port, SKB_MAX_HEAD(align) underflows, causing tun_alloc_skb() to place skb->data outside the allocate...

CVE-2026-81000 net: tun: bound receive headroom

In the Linux kernel, the following vulnerability has been resolved: net: tun: bound receive headroom tungetuser uses tun-align both as skb headroom and when choosing how much packet data to keep linear. OVS can propagate an oversized headroom request from another port to TUN or TAP. When align is...

EUVD-2026-76323

In the Linux kernel, the following vulnerability has been resolved: net: tun: bound receive headroom tungetuser uses tun-align both as skb headroom and when choosing how much packet data to keep linear. OVS can propagate an oversized headroom request from another port to TUN or TAP. When align is...

PT-2026-96385

In the Linux kernel, the following vulnerability has been resolved: net: tun: bound receive headroom tun get user uses tun-align both as skb headroom and when choosing how much packet data to keep linear. OVS can propagate an oversized headroom request from another port to TUN or TAP. When align ...

CVE-2026-81000: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net: tun: bound receive headroom tungetuser uses tun-align both as skb headroom and when choosing how much packet data to keep linear. OVS can propagate an oversized headroom request from another port to TUN or TAP. When align is...

CVE-2026-81000: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net: tun: bound receive headroom tungetuser uses tun-align both as skb headroom and when choosing how much packet data to keep linear. OVS can propagate an oversized headroom request from another port to TUN or TAP. When align is...

The vulnerability of the nft_inner_restore_tun_ctx() function in the net/netfilter/nft_inner.c module of the netfilter component of the Linux operating system allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the nftinnerrestoretunctx function in the net/netfilter/nftinner.c module of the netfilter component of the Linux operating system is related to synchronization errors. Exploiting this vulnerability can allow a remote attacker to compromise the confidentiality, integrity, and...

The vulnerability of the tun_xdp_one() function in the drivers/net/tun.c module of the Linux kernel’s network device driver allows a attacker to cause a service failure.

The vulnerability of the tunxdpone function in the drivers/net/tun.c file of the Linux kernel’s network device driver module is related to the copying of buffers without checking the size of the input data. Exploiting this vulnerability could allow an attacker to cause a system failure...

The vulnerability of the tun_xdp_one() function in the drivers/net/tun.c module of the Linux kernel’s network device driver allows a attacker to cause a service failure.

The vulnerability of the tunxdpone function in the drivers/net/tun.c file of the Linux kernel’s network device driver leads to an infinite loop when a condition for exiting the loop is not met. Exploiting this vulnerability could allow an attacker to cause a system failure...

The vulnerability of the tunPutUser() function in the drivers/net/tun.c file of the Linux kernel’s network device driver allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the tunPutUser function in the drivers/net/tun.c file of the Linux kernel network device driver is related to the lack of resource initialization. Exploiting this vulnerability could allow an attacker to compromise the confidentiality, integrity, and accessibility of the...

SUSE CVE-2026-72444

In the Linux kernel, the following vulnerability has been resolved: flowdissector: check device type before reading ETHADDRS skbflowdissect unconditionally reads 12 bytes from ethhdrskb when FLOWDISSECTORKEYETHADDRS is requested. This assumes the skb has a valid Ethernet header at macheader, whic...

CVE-2026-80590 inet: frags: strip GSO state from fragments before reassembly

In the Linux kernel, the following vulnerability has been resolved: inet: frags: strip GSO state from fragments before reassembly A virtionethdr tun/tap, or AFPACKET with PACKETVNETHDR can mark an IPv4 or IPv6 fragment as GSO; nothing relates gsotype to fragoff...

CVE-2026-80590: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: inet: frags: strip GSO state from fragments before reassembly A virtionethdr tun/tap, or AFPACKET with PACKETVNETHDR can mark an IPv4 or IPv6 fragment as GSO; nothing relates gsotype to fragoff...

PT-2026-86711

In the Linux kernel, the following vulnerability has been resolved: inet: frags: strip GSO state from fragments before reassembly A virtio net hdr tun/tap, or AF PACKET with PACKET VNET HDR can mark an IPv4 or IPv6 fragment as GSO; nothing relates gso type to frag off. inet frag reasm prepare/ine...

PT-2026-82915

Name of the Vulnerable Software and Affected Versions Linux Kernel affected versions not specified Description A false-positive memcpy overflow occurs in the tun dst unclone function within the dst metadata component. When built with clang and source fortification, the compiler incorrectly...

Linux Distros Unpatched Vulnerability : CVE-2026-80590

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - inet: frags: strip GSO state from fragments before reassembly A virtionethdr tun/tap, or AFPACKET with PACKETVNETHDR can mark an IPv4 or IPv6 fragment as GSO;...

SUSE CVE-2026-74701

In the Linux kernel, the following vulnerability has been resolved: net/openvswitch: check Ethernet header length in keyextract When a packet arrives on an ARPHRDNONE device e.g. TUN, ovsflowkeyextract trusts the user-provided skb-protocol field: if it is ETHPTEB, the packet is classified as...