CVE-2026-80840 ipv6: seg6: clear IPv4 control block on IPIP decapsulation

In the Linux kernel, the following vulnerability has been resolved: ipv6: seg6: clear IPv4 control block on IPIP decapsulation End.DX4 and End.DT4 decapsulate an IPv4 packet through decapandvalidate and send it directly to IPv4 routing. The inner packet therefore bypasses iprcvcore, which normall...

PT-2026-85718

In the Linux kernel, the following vulnerability has been resolved: ipv6: seg6: clear IPv4 control block on IPIP decapsulation End.DX4 and End.DT4 decapsulate an IPv4 packet through decap and validate and send it directly to IPv4 routing. The inner packet therefore bypasses ip rcv core, which...

kernel: net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels

A flaw was found in the Linux kernel's IPv6 networking implementation, specifically within the seg6 and rpl lwtunnels. A race condition can occur when handling destination cache entries, where a NOREF no reference destination object is used after it has been freed. This use-after-free vulnerabili...

Important: Red Hat Security Advisory: kernel security, bug fix, and enhancement update

An update for kernel is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

kernel: net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels

A flaw was found in the Linux kernel's IPv6 networking implementation, specifically within the seg6 and rpl lwtunnels. A race condition can occur when handling destination cache entries, where a NOREF no reference destination object is used after it has been freed. This use-after-free vulnerabili...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098791)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098791 advisory. In the Linux kernel, the following vulnerability has been resolved: net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels seg6inputcore and rplinput call...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

A out-of-bounds read vulnerability was discovered in the SR-IPv6 implementation within the Linux kernel. The flaw arises from the processing of seg6 attributes. The issue stems from the improper validation of user-provided data, which can lead to reading data beyond the bounds of an allocated...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: Fixed a memory leak in seg6hmacinitalgo. seg6hmacinitalgo returns without cleaning up previously allocated memory. If this happens, all that memory will be leaked, potentially causing issues with crypto-related function...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: Fix the issue of failing to release the skbuff in seg6inputcore. The seg6input function is responsible for adding the SRH into a packet, with the operation delegated to seg6inputcore. This function uses skbcowhead to...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-102020)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-102020 advisory. In the Linux kernel, the following vulnerability has been resolved: net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels seg6inputcore and rplinput call...

CVE-2026-72400

A flaw was found in the Linux kernel's Segment Routing over IPv6 SEG6 component. Insufficient validation of the Segment Routing Header SRH length before reading its fixed fields can lead to an out-of-bounds read. A local attacker, by crafting a malicious BPF Berkeley Packet Filter program, could...

Linux Distros Unpatched Vulnerability : CVE-2026-72400

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - seg6: validate SRH length before reading fixed fields seg6validatesrh reads fixed SRH fields such as srh-type and srh-hdrlen before checking that the supplied...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-100370)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-100370 advisory. In the Linux kernel, the following vulnerability has been resolved: seg6: separate dstcache for input and output paths in seg6 lwtunnel The seg6 lwtunnel uses a sing...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-099739)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-099739 advisory. In the Linux kernel, the following vulnerability has been resolved: seg6: separate dstcache for input and output paths in seg6 lwtunnel The seg6 lwtunnel uses a sing...

UBUNTU-CVE-2026-72400

In the Linux kernel, the following vulnerability has been resolved: seg6: validate SRH length before reading fixed fields seg6validatesrh reads fixed SRH fields such as srh-type and srh-hdrlen before checking that the supplied length covers the fixed struct ipv6srhdr fields. The BPF SEG6 encap pa...

CVE-2026-72400

In the Linux kernel, the following vulnerability has been resolved: seg6: validate SRH length before reading fixed fields seg6validatesrh reads fixed SRH fields such as srh-type and srh-hdrlen before checking that the supplied length covers the fixed struct ipv6srhdr fields. The BPF SEG6 encap pa...

CVE-2026-72400 seg6: validate SRH length before reading fixed fields

In the Linux kernel, the following vulnerability has been resolved: seg6: validate SRH length before reading fixed fields seg6validatesrh reads fixed SRH fields such as srh-type and srh-hdrlen before checking that the supplied length covers the fixed struct ipv6srhdr fields. The BPF SEG6 encap pa...

CVE-2026-72400

The CVE-2026-72400 entry documents a Linux kernel vulnerability in SEG6: the seg6_validate_srh() function reads fixed IPv6 Segment Routing Header (SRH) fields (e.g., srh->type, srh->hdrlen) before validating that the input length covers the fixed SRH struct. Through the BPF SEG6 encap path ...

CVE-2026-72400 seg6: validate SRH length before reading fixed fields

In the Linux kernel, the following vulnerability has been resolved: seg6: validate SRH length before reading fixed fields seg6validatesrh reads fixed SRH fields such as srh-type and srh-hdrlen before checking that the supplied length covers the fixed struct ipv6srhdr fields. The BPF SEG6 encap pa...

PT-2026-72588

In the Linux kernel, the following vulnerability has been resolved: seg6: validate SRH length before reading fixed fields seg6 validate srh reads fixed SRH fields such as srh-type and srh-hdrlen before checking that the supplied length covers the fixed struct ipv6 sr hdr fields. The BPF SEG6 enca...