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...

SUSE-SU-2026:22690-1 Security update for the Linux Kernel RT (Live Patch 15 for SUSE Linux Enterprise Micro 6.0)

This update for the SUSE Linux Enterprise Kernel 6.4.0-39.1 fixes various security issues The following security issues were fixed: - CVE-2025-71089: iommu: disable SVA when CONFIGX86 is set bsc1256615. - CVE-2026-23393: bridge: cfm: Fix race condition in peermep deletion bsc1260524. -...

SUSE-SU-2026:22692-1 Security update for the Linux Kernel RT (Live Patch 19 for SUSE Linux Enterprise Micro 6.0)

This update for the SUSE Linux Enterprise Kernel 6.4.0-41.1 fixes various security issues The following security issues were fixed: - CVE-2026-23393: bridge: cfm: Fix race condition in peermep deletion bsc1260524. - CVE-2026-31505: iavf: fix out-of-bounds writes in iavfgetethtoolstats bsc1263094....

SUSE-SU-2026:3065-1 Security update for the Linux Kernel (Live Patch 74 for SUSE Linux Enterprise 12 SP5)

This update for the SUSE Linux Enterprise Kernel 4.12.14-122.280 fixes various security issues The following security issues were fixed: - CVE-2026-31685: netfilter: ip6teui64: reject invalid MAC header for all packets bsc1263670. - CVE-2026-43025: netfilter: ctnetlink: ignore explicit helper on...

SUSE-SU-2026:2995-1 Security update for the Linux Kernel (Live Patch 69 for SUSE Linux Enterprise 12 SP5)

This update for the SUSE Linux Enterprise Kernel 4.12.14-122.261 fixes various security issues The following security issues were fixed: - CVE-2026-31685: netfilter: ip6teui64: reject invalid MAC header for all packets bsc1263670. - CVE-2026-43025: netfilter: ctnetlink: ignore explicit helper on...

SUSE-SU-2026:2894-1 Security update for the Linux Kernel (Live Patch 12 for SUSE Linux Enterprise 15 SP6)

This update for the SUSE Linux Enterprise Kernel 6.4.0-150600.23.53 fixes various security issues The following security issues were fixed: - CVE-2025-71089: iommu: disable SVA when CONFIGX86 is set bsc1256615. - CVE-2026-23393: bridge: cfm: Fix race condition in peermep deletion bsc1260524. -...

Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2026-50374)

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-50374 advisory. - net/sched: fix pedit partial COW leading to page cache corruption Rajat Gupta Orabug: 39680880 CVE-2026-46331 - net: skbuff: fix missing zerocop...

PT-2026-52316

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the ip6 vti module where the vti6 tnl lookup function fails to correctly validate tunnels during fallback searches. When an exact tunnel match fails, the system search...

RHEL 7 : kernel (RHSA-2026:27729)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:27729 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: Linux kernel: Denial of servi...

SUSE SLES15 Security Update : kernel (SUSE-SU-2026:2421-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2421-1 advisory. The SUSE Linux Enterprise 15 SP5 kernel was updated to fix various security issues The following security issues were fixed: -...

Oracle Linux 8 : kernel (ELSA-2026-25121)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-25121 advisory. - ip6tunnel: clear skb2-cb in ip4ip6err Guillaume Nault RHEL-172640 CVE-2026-43037 - dlm: fix buffer overflow from negative len in dlmsearchrsbtree...

RHEL 10 : kernel (RHSA-2026:25534)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:25534 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: ip6tunnel: clear skb2-cb in ip4ip6err...

Critical: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

RHEL 8 : kernel-rt (RHSA-2026:25120)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:25120 advisory. The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism...

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...

Security update for the Linux Kernel

The SUSE Linux Enterprise 11 SP4 kernel was updated to fix various security issues The following security issues were fixed: CVE-2026-23271: perf: Fix perfeventoverflow vs perfremovefromcontext race bsc1260018. CVE-2026-31402: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache bsc1261638...

CVE-2026-46120

Concrete details found: CVE-2026-46120 affects the Linux kernel ip6_gre machinery. The issue is in ip6erspan_changelink(), which wrongly uses dev_net(dev) instead of the correct per-netns hash resolved by link_net, after a patch series that fixed per-netns resolution in ip6erspan_newlink(). This ...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: ipv6: Ensure a sane device MTU in tunnels Another syzbot report 1 indicates a bug in the ip6gre tunnel device: dev:ip6gretap0. Since the ipv6 mcast code ensures that the dev-mtu is read once and a sanity check is performed on it...

SUSE CVE-2026-43037

In the Linux kernel, the following vulnerability has been resolved: ip6tunnel: clear skb2-cb in ip4ip6err Oskar Kjos reported the following problem. ip4ip6err calls icmpsend on a cloned skb whose cb was written by the IPv6 receive path as struct inet6skbparm. icmpsend passes IPCBskb2 to...

CVE-2026-43037 ip6_tunnel: clear skb2->cb[] in ip4ip6_err()

In the Linux kernel, the following vulnerability has been resolved: ip6tunnel: clear skb2-cb in ip4ip6err Oskar Kjos reported the following problem. ip4ip6err calls icmpsend on a cloned skb whose cb was written by the IPv6 receive path as struct inet6skbparm. icmpsend passes IPCBskb2 to...