CVE-2026-80612

A flaw was found in the Linux kernel's lightweight tunnel LWT encapsulation process. This vulnerability occurs when network packets carrying specific metadata are processed, causing the system to incorrectly overwrite or clear this metadata. Such an issue can lead to unexpected behavior or data...

Linux Distros Unpatched Vulnerability : CVE-2026-80612

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net: lwtunnel: Drop skb metadata before LWT encapsulation skb metadata is meant for passing information between XDP and TC. It lives in the skb headroom,...

CVE-2026-80612

In the Linux kernel, the following vulnerability has been resolved: net: lwtunnel: Drop skb metadata before LWT encapsulation skb metadata is meant for passing information between XDP and TC. It lives in the skb headroom, immediately before skb-data. LWT programs cannot access the skbuff-datameta...

UBUNTU-CVE-2026-80612

In the Linux kernel, the following vulnerability has been resolved: net: lwtunnel: Drop skb metadata before LWT encapsulation skb metadata is meant for passing information between XDP and TC. It lives in the skb headroom, immediately before skb-data. LWT programs cannot access the skbuff-datameta...

CVE-2026-80612

This Linux kernel vulnerability affects the net lwtunnel (lightweight tunnel) subsystem. When LWT encapsulation prepends outer headers, it moves skb->data over the headroom where XDP/TC skb metadata resides. Non-BPF encaps types (MPLS, Seg6, IOAM6) silently overwrite this metadata via skb_push...

CVE-2026-80612 net: lwtunnel: Drop skb metadata before LWT encapsulation

In the Linux kernel, the following vulnerability has been resolved: net: lwtunnel: Drop skb metadata before LWT encapsulation skb metadata is meant for passing information between XDP and TC. It lives in the skb headroom, immediately before skb-data. LWT programs cannot access the skbuff-datameta...

PT-2026-82912

In the Linux kernel, the following vulnerability has been resolved: net: lwtunnel: Drop skb metadata before LWT encapsulation skb metadata is meant for passing information between XDP and TC. It lives in the skb headroom, immediately before skb-data. LWT programs cannot access the sk buff-data me...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: lwt: Fixed the return values of BPF xmit operations. The BPF encap operations can return different types of positive values, such as NETRXDROP, NETXMITCN, NETDEVTXBUSY, etc., from the functions skbdoredirect and...

CVE-2026-72429

A flaw was found in the Linux kernel's IPv6 In-situ Operations, Administration, and Maintenance IOAM subsystem. This vulnerability arises from a type confusion where a dummy network destination entry dstentry is incorrectly handled as a routing information structure rt6info. When this dummy entry...

ROS-20260702-73-0021

The vulnerability of the functions runlwtbpf and bpflwtxmitreroute in the net/core/lwtbpf.c module relates to the reutilization of previously freed memory. Exploiting this vulnerability could allow an attacker to compromise the confidentiality, integrity, and accessibility of protected informatio...

CVE-2026-53111

A flaw was found in the Linux kernel. The bpflwtxmitpushencap helper in the Berkeley Packet Filter BPF subsystem attempts to access an uninitialized network device structure during certain test runs. A local user can exploit this null pointer dereference by executing the bpflwtpushipencap functio...

SUSE CVE-2026-53111

In the Linux kernel, the following vulnerability has been resolved: bpf: testrun: Fix the null pointer dereference issue in bpflwtxmitpushencap The bpflwtxmitpushencap helper needs to access skbdstskb-dev to calculate the needed headroom: err = skbcowheadskb, len + LLRESERVEDSPACEskbdstskb-dev; B...

CVE-2026-53111 bpf: test_run: Fix the null pointer dereference issue in bpf_lwt_xmit_push_encap

In the Linux kernel, the following vulnerability has been resolved: bpf: testrun: Fix the null pointer dereference issue in bpflwtxmitpushencap The bpflwtxmitpushencap helper needs to access skbdstskb-dev to calculate the needed headroom: err = skbcowheadskb, len + LLRESERVEDSPACEskbdstskb-dev; B...

CVE-2026-53111

CVE-2026-53111 is a Linux kernel issue where bpf_lwt_xmit_push_encap dereferences skb_dst(skb)->dev during test_run when skb->_skb_refdst is uninitialized, leading to a kernel crash. A patch and remediation include initializing skb->_skb_refdst before bpf_test_run_skb, as evidenced by Ro...

EUVD-2026-38979

In the Linux kernel, the following vulnerability has been resolved: bpf: testrun: Fix the null pointer dereference issue in bpflwtxmitpushencap The bpflwtxmitpushencap helper needs to access skbdstskb-dev to calculate the needed headroom: err = skbcowheadskb, len + LLRESERVEDSPACEskbdstskb-dev; B...

CVE-2026-53111 bpf: test_run: Fix the null pointer dereference issue in bpf_lwt_xmit_push_encap

In the Linux kernel, the following vulnerability has been resolved: bpf: testrun: Fix the null pointer dereference issue in bpflwtxmitpushencap The bpflwtxmitpushencap helper needs to access skbdstskb-dev to calculate the needed headroom: err = skbcowheadskb, len + LLRESERVEDSPACEskbdstskb-dev; B...

PT-2026-52005

Name of the Vulnerable Software and Affected Versions Linux kernel version 6.19.0-rc5 Description A null pointer dereference issue exists in the bpf lwt xmit push encap helper. The issue occurs because the skb- skb refdst variable may not be initialized when the socket buffer skb is set up by the...

The vulnerability in determining the structure of lwt_seg6local_verifier_ops{} in the net/core/filter.c module, which supports networking functions in the Linux operating system’s kernel, allows a hacker to cause a service failure.

The vulnerability of the definition of the structure lwtseg6localverifierops in the module net/core/filter.c, which supports networking functions in the Linux operating system’s kernel, relates to resource operations performed at an inappropriate stage of their lifecycle. Exploiting this...

The vulnerabilities of the functions run_lwt_bpf() and bpf_lwt_xmit_reroute() in the net/core/lwt_bpf.c module, which are part of Linux’s kernel-based networking functions support, allow attackers to compromise the confidentiality, integrity, and accessibility of protected information.

The vulnerability of the functions runlwtbpf and bpflwtxmitreroute in the net/core/lwtbpf.c module relates to the reutilization of previously freed memory. Exploiting this vulnerability could allow an attacker to compromise the confidentiality, integrity, and accessibility of protected informatio...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-005713)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005713 advisory. In the Linux kernel, the following vulnerability has been resolved: lwt: Fix return values of BPF xmit ops BPF encap ops can return different types of positive value...