CVE-2026-63922

In the Linux kernel, the following vulnerability has been resolved: ipv6: exthdrs: refresh nh after handling HAO option ip6parsetlv caches skbnetworkheaderskb in nh while walking IPv6 TLVs. ipv6desthao may call pskbexpandhead for a cloned skb, which can move the skb head and invalidate the cached...

EUVD-2026-45695

In the Linux kernel, the following vulnerability has been resolved: ipv6: exthdrs: refresh nh after handling HAO option ip6parsetlv caches skbnetworkheaderskb in nh while walking IPv6 TLVs. ipv6desthao may call pskbexpandhead for a cloned skb, which can move the skb head and invalidate the cached...

EUVD-2026-45694

In the Linux kernel, the following vulnerability has been resolved: ip6: vti: Use ip6tnl.net in vti6siocdevprivate. After patch 1/2 in this series, vti6update unlinks and relinks the tunnel through t-net. vti6siocdevprivate still uses devnetdev for the collision lookup. For a tunnel moved through...

CVE-2026-63920

The CVE-2026-63920 entry describes a Linux kernel vulnerability in IPv6 extension header handling. The issue arises when ip6_datagram_recv_specific_ctl() builds IPV6_…cmsgs by trusting on-wire hdrlen (ptr[1]) during put_cmsg() length calculation. Although the write to hdrlen is in-bounds, reading...

CVE-2026-63920

In the Linux kernel, the following vulnerability has been resolved: ipv6: validate extension header length before copying to cmsg ip6datagramrecvspecificctl builds IPV6HOPOPTS,DSTOPTS,RTHDR cmsgs and their IPV62292 legacy counterparts by trusting the on-wire hdrlen byte ptr1 when computing the...

CVE-2026-63920 ipv6: validate extension header length before copying to cmsg

In the Linux kernel, the following vulnerability has been resolved: ipv6: validate extension header length before copying to cmsg ip6datagramrecvspecificctl builds IPV6HOPOPTS,DSTOPTS,RTHDR cmsgs and their IPV62292 legacy counterparts by trusting the on-wire hdrlen byte ptr1 when computing the...

CVE-2026-63920 ipv6: validate extension header length before copying to cmsg

In the Linux kernel, the following vulnerability has been resolved: ipv6: validate extension header length before copying to cmsg ip6datagramrecvspecificctl builds IPV6HOPOPTS,DSTOPTS,RTHDR cmsgs and their IPV62292 legacy counterparts by trusting the on-wire hdrlen byte ptr1 when computing the...

CVE-2026-63917 ip6: vti: Use ip6_tnl.net in vti6_changelink().

In the Linux kernel, the following vulnerability has been resolved: ip6: vti: Use ip6tnl.net in vti6changelink. ip netns add ns1 ip netns add ns2 ip -n ns1 link add vti6test type vti6 remote ::1 local ::2 key 7 ip -n ns1 link set vti6test netns ns2 ip -n ns2 link set vti6test type vti6 remote ::3...

CVE-2026-63870 ieee802154: 6lowpan: only accept IPv6 packets in lowpan_xmit()

In the Linux kernel, the following vulnerability has been resolved: ieee802154: 6lowpan: only accept IPv6 packets in lowpanxmit The aoe driver or similar generates a non-IPv6 packet e.g., ETHPAOE and queues it for transmission via devqueuexmit on a 6LoWPAN interface configured by the user or test...

Updated nmap packages fix a security vulnerability

The updated packages fix a security vulnerability: Integer Underflow in IPv6 Extension Header Parsing. CVE-2026-58058...

PT-2026-61433

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A NULL pointer dereference occurs in the Linux kernel when processing an IOAM Hop-by-Hop option. The function ipv6 hop ioam accesses in6 dev getskb-dev-cnf.ioam6 enabled without validati...

PT-2026-61301

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An integer overflow occurs in the ipv6 rpl srh decompress function when processing Routing Header SRH decompression. The hdrlen variable, defined as u8, fails to hold values when n is 12...

PT-2026-61241

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the IPv6 extension headers handling where the ipv6 hop jumbo function calls pskb trim rcsum, which can lead to changes in the socket buffer skb pointers. This requires...

SUSE SLES15 Security Update : kernel (Live Patch 16 for SUSE Linux Enterprise 15 SP7) (SUSE-SU-2026:3083-1)

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3083-1 advisory. This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.53.60 fixes various security issues The following security issues were fixed: -...

SUSE SLES15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2026:3089-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3089-1 advisory. The SUSE Linux Enterprise 15 SP5 kernel was updated to fix various security issues The following security issues were fixed: -...

GO-2026-5997 safeurl is Missing IPv6 CIDR Ranges in Blocklist in github.com/doyensec/safeurl

safeurl is Missing IPv6 CIDR Ranges in Blocklist in github.com/doyensec/safeurl...

GO-2026-5996 ToolHive: SSRF guard misses IPv6 NAT64 ranges (64:ff9b::/96, 64:ff9b:1::/48), allowing metadata/internal access behind a NAT64 gateway in github.com/stacklok/toolhive

ToolHive: SSRF guard misses IPv6 NAT64 ranges 64:ff9b::/96, 64:ff9b:1::/48, allowing metadata/internal access behind a NAT64 gateway in github.com/stacklok/toolhive...

kernel: netfilter: ip6t_eui64: reject invalid MAC header for all packets

A flaw was found in the Linux kernel's netfilter component. This vulnerability occurs because the eui64mt6 function, which processes IPv6 packets, does not properly validate the MAC header for all packets. Specifically, packets with a zero fragment offset could bypass an existing guard, allowing...

kernel: ip6_tunnel: clear skb2->cb[] in ip4ip6_err()

A flaw was found in the Linux kernel's IPv6 tunnel implementation. A remote attacker could exploit this flaw by sending malicious ICMPv6 error messages to cause a stack-based buffer overflow in the kernel's IPv4-over-IPv6 tunnel error handling code. This could result in a kernel crash denial of...

USN-8490-2: Linux kernel (Real-time) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - Block layer subsystem; - Cryptographic API; - DMA engine subsystem; - InfiniBand drivers; -...