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

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. ...

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

The CVE relates to the Linux kernel tun driver vulnerability CVE-2026-46322. When build_skb() fails inside tun_xdp_one(), the function returns -ENOMEM without freeing the allocated page for the frame, causing a memory leak of one page-frag chunk per failed build_skb() in a batch. The root cause i...

CVE-2026-46321

In the Linux kernel, the following vulnerability has been resolved: tun: free page on short-frame rejection in tunxdpone tunxdpone returns -EINVAL on a frame shorter than ETHHLEN without freeing the page that vhostnetbuildxdp allocated for it. tunsendmsg discards that -EINVAL and still returns...

CVE-2026-46321 tun: free page on short-frame rejection in tun_xdp_one()

In the Linux kernel, the following vulnerability has been resolved: tun: free page on short-frame rejection in tunxdpone tunxdpone returns -EINVAL on a frame shorter than ETHHLEN without freeing the page that vhostnetbuildxdp allocated for it. tunsendmsg discards that -EINVAL and still returns...

CVE-2026-46321

In the Linux kernel, the following vulnerability has been resolved: tun: free page on short-frame rejection in tunxdpone tunxdpone returns -EINVAL on a frame shorter than ETHHLEN without freeing the page that vhostnetbuildxdp allocated for it. tunsendmsg discards that -EINVAL and still returns...

EUVD-2026-35411

In the Linux kernel, the following vulnerability has been resolved: tun: free page on short-frame rejection in tunxdpone tunxdpone returns -EINVAL on a frame shorter than ETHHLEN without freeing the page that vhostnetbuildxdp allocated for it. tunsendmsg discards that -EINVAL and still returns...

CVE-2026-46321

Summary. CVE-2026-46321 concerns the Linux kernel tun/tap with vhost-net, where a short-frame rejection path in tun_xdp_one() can leak memory pages. Specifically, when a frame is shorter than ETH_HLEN, tun_xdp_one() returns -EINVAL without freeing the page allocated by vhost_net_build_xdp(). tun_...

CVE-2026-46321 tun: free page on short-frame rejection in tun_xdp_one()

In the Linux kernel, the following vulnerability has been resolved: tun: free page on short-frame rejection in tunxdpone tunxdpone returns -EINVAL on a frame shorter than ETHHLEN without freeing the page that vhostnetbuildxdp allocated for it. tunsendmsg discards that -EINVAL and still returns...

Linux Distros Unpatched Vulnerability : CVE-2026-46322

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

Linux Distros Unpatched Vulnerability : CVE-2026-46321

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - tun: free page on short-frame rejection in tunxdpone tunxdpone returns -EINVAL on a frame shorter than ETHHLEN without freeing the page that vhostnetbuildxdp...

PT-2026-47759

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A memory leak occurs in the Linux kernel when the build skb function fails within the tun xdp one function. In this scenario, the system sets the return value to -ENOMEM and exits withou...

PT-2026-47758

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A memory leak occurs in the Linux kernel when the tun xdp one function returns -EINVAL for frames shorter than ETH HLEN without freeing the page allocated by vhost net build xdp. Because...

Arbitrary Code Injection

Overview Affected versions of this package are vulnerable to Arbitrary Code Injection via the ListenHost and TunDevice fields, which are interpolated directly into a configuration template without adequate validation. An attacker can inject arbitrary YAML content by supplying specially crafted...

nebula-mesh: Host advanced overrides allow YAML injection into agent config.yml

internal/configgen/generator.go:86,108,119 interpolates the operator-supplied ListenHost and TunDevice fields raw into a text/template that produces the agent's config.yml. internal/web/advanced.go:20-35 accepts both with only strings.TrimSpace — no character or shape validation. Exploit An...

PT-2026-47557

internal/configgen/generator.go:86,108,119 interpolates the operator-supplied ListenHost and TunDevice fields raw into a text/template that produces the agent's config.yml. internal/web/advanced.go:20-35 accepts both with only strings.TrimSpace — no character or shape validation. Exploit An...

PT-2026-47619

Name of the Vulnerable Software and Affected Versions nebula-mesh versions prior to 0.3.2 Description Host advanced overrides allow YAML injection into the agent config.yml. The issue occurs because the ListenHost and TunDevice fields are interpolated raw into a text/template within...

Unbreakable Enterprise kernel security update

5.4.17-2136.356.4.1 - smb: client: reject userspace cifs.spnego descriptions Asim Viladi Oglu Manizada Orabug: 39463669 5.4.17-2136.356.4 - tun: free page on buildskb failure in tunxdpone Weiming Shi Orabug: 39429147 - tap: free page on error paths in tapgetuserxdp Weiming Shi Orabug: 39429147 -...