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

🗓️ 24 Jul 2026 11:19:45Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 6 Views

Linux kernel IPv6 seg six and rpl tunnels suffer use after free of NOREF destination, risking DoS on preemptible real time systems.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-46099
27 May 202612:59
–attackerkb
Tenable Nessus		Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1753)
27 May 202600:00
–nessus
Tenable Nessus		Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-1754)
27 May 202600:00
–nessus
Tenable Nessus		Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2026-1882)
22 Jun 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2026-107 (ALASKERNEL-5.15-2026-107)
22 Jun 202600:00
–nessus
Tenable Nessus		AlmaLinux 9 : kernel (ALSA-2026:43307)
24 Jul 202600:00
–nessus
Tenable Nessus		Debian dla-4665 : affs-modules-6.1.0-48-4kc-malta-di - security update
3 Jul 202600:00
–nessus
Tenable Nessus		Debian dla-4671 : linux-config-6.1 - security update
6 Jul 202600:00
–nessus
Tenable Nessus		openSUSE 16: cluster-md-kmp-64kb / cluster-md-kmp-azure / cluster-md-kmp-default / etc (openSUSE-SU-2026:21388-1)
24 Jul 202600:00
–nessus
Tenable Nessus		Oracle Linux 9 : kernel (ELSA-2026-43307)
23 Jul 202600:00
–nessus
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux10.2aarch64kernel6.12.0-211.39.1.el10_2kernel-6.12.0-211.39.1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2ppc64lekernel6.12.0-211.39.1.el10_2kernel-6.12.0-211.39.1.el10_2.ppc64le.rpm
Red Hat Enterprise Linux10.2s390xkernel6.12.0-211.39.1.el10_2kernel-6.12.0-211.39.1.el10_2.s390x.rpm
Red Hat Enterprise Linux10.2x86_64kernel6.12.0-211.39.1.el10_2kernel-6.12.0-211.39.1.el10_2.x86_64.rpm
Red Hat Enterprise Linux10.2aarch64kernel-64k6.12.0-211.39.1.el10_2kernel-64k-6.12.0-211.39.1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2aarch64kernel-64k-core6.12.0-211.39.1.el10_2kernel-64k-core-6.12.0-211.39.1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2aarch64kernel-64k-debug6.12.0-211.39.1.el10_2kernel-64k-debug-6.12.0-211.39.1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2aarch64kernel-64k-debug-core6.12.0-211.39.1.el10_2kernel-64k-debug-core-6.12.0-211.39.1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2aarch64kernel-64k-debug-debuginfo6.12.0-211.39.1.el10_2kernel-64k-debug-debuginfo-6.12.0-211.39.1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2aarch64kernel-64k-debug-devel6.12.0-211.39.1.el10_2kernel-64k-debug-devel-6.12.0-211.39.1.el10_2.aarch64.rpm
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24 Jul 2026 20:37Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.18.1
EPSS0.00321
CWE-911
linux kernelinternet protocol sixsegment six tunnelrpl tunneldestination cacheuse after freeno reference destinationrace conditiondenial of servicepreemptible real time
6