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...

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...

OESA-2026-3206 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: Arm C1-Ultra, C1-Premium, Neoverse V3 & V3AE, Neoverse V2, Neoverse V1, Neoverse-N2, Neoverse-N1, Cortex-X925, Cortex-X4, Cortex-X3, Cortex-X2, Cortex-X1 & X1C, Cortex-A710, Cortex-A78, A78AE & A78C, Cortex-A77, Cortex-A76 & A76A...

CVE-2026-52940

A flaw was found in the Linux kernel's tun driver. An unprivileged user can exploit this vulnerability by setting the virtual network vnet header size to 24 bytes. This action causes the kernel to copy partially initialized stack memory to userspace when reading non-tunnel packets, leading to the...

CVE-2026-52940 tun: zero the whole vnet header in tun_put_user()

In the Linux kernel, the following vulnerability has been resolved: tun: zero the whole vnet header in tunputuser tunputuser declares an on-stack struct virtionethdrv1hashtunnel without zeroing it. For a non-tunnel skb, virtionethdrtnlfromskb only initializes the first 10 bytes sizeofstruct...

CVE-2026-46322

A flaw was found in the Linux kernel's tun driver. This vulnerability occurs when the buildskb function fails within tunxdpone, leading to a failure to free an allocated memory page. Each such failure results in a memory leak, where a 'page-frag chunk' is not released. Over time, repeated...

UBUNTU-CVE-2026-46322

In the Linux kernel, the following vulnerability has been resolved: tun: free page on buildskb failure in tunxdpone When buildskb fails in tunxdpone, the function sets ret to -ENOMEM and jumps to the out label, which returns without freeing the page that vhostnetbuildxdp allocated for the frame. ...

CVE-2026-46322 tun: free page on build_skb failure in tun_xdp_one()

In the Linux kernel, the following vulnerability has been resolved: tun: free page on buildskb failure in tunxdpone When buildskb fails in tunxdpone, the function sets ret to -ENOMEM and jumps to the out label, which returns without freeing the page that vhostnetbuildxdp allocated for the frame. ...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: net: tun: Fix memory leaks in napigetfrags The issue was reported in kmemleak after running testprogs: Unreferenced object: 0xffff8881b1672dc0 size 232 Details: comm “testprogs”, pid 394388, jiffies 4354712116 age 841.975s Hex du...

SUSE CVE-2026-23254

In the Linux kernel, the following vulnerability has been resolved: net: gro: fix outer network offset The udp GRO complete stage assumes that all the packets inserted the RX have the encapsulation flag zeroed. Such assumption is not true, as a few H/W NICs can set such flag when H/W offloading t...

CVE-2026-23254

In the Linux kernel, the following vulnerability has been resolved: net: gro: fix outer network offset The udp GRO complete stage assumes that all the packets inserted the RX have the encapsulation flag zeroed. Such assumption is not true, as a few H/W NICs can set such flag when H/W offloading t...

DEBIAN-CVE-2026-23254

In the Linux kernel, the following vulnerability has been resolved: net: gro: fix outer network offset The udp GRO complete stage assumes that all the packets inserted the RX have the encapsulation flag zeroed. Such assumption is not true, as a few H/W NICs can set such flag when H/W offloading t...

UBUNTU-CVE-2026-23254

In the Linux kernel, the following vulnerability has been resolved: net: gro: fix outer network offset The udp GRO complete stage assumes that all the packets inserted the RX have the encapsulation flag zeroed. Such assumption is not true, as a few H/W NICs can set such flag when H/W offloading t...

CVE-2026-23254

In the Linux kernel, the following vulnerability has been resolved: net: gro: fix outer network offset The udp GRO complete stage assumes that all the packets inserted the RX have the encapsulation flag zeroed. Such assumption is not true, as a few H/W NICs can set such flag when H/W offloading t...

Linux Distros Unpatched Vulnerability : CVE-2026-23254

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net: gro: fix outer network offset The udp GRO complete stage assumes that all the packets inserted the RX have the encapsulation flag zeroed. Such assumption i...

Linux Distros Unpatched Vulnerability : CVE-2026-23095

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - gue: Fix skb memleak with inner IP protocol 0. syzbot reported skb memleak below. 0 The repro generated a GUE packet with its inner protocol 0. gueudprecv retur...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-002011)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002011 advisory. Use-after-free vulnerability in drivers/net/tun.c in the Linux kernel through 3.11.1 allows local users to gain privileges by leveraging the CAPNETADMIN capability a...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: Net: tun: Update napi-skb after the XDP process. The syzbot report a UAF issue: BUG: KASAN: slab-use-after-free in skbresetmacheader include/linux/skbuff.h:3150 inline BUG: KASAN: slab-use-after-free in napifragsskb...

PT-2026-26114

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel's UDP GRO Generic Receive Offload complete stage. The UDP GRO complete stage incorrectly assumes that the encapsulation flag is zeroed for all packets...