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

In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6thbh – Rejects oversized option lists. The struct ip6topts structure stores at most IP6TOPTSOPTSNR option descriptors. However, the bhhmt6check function does not reject larger values of optsnr provided by userspace...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-100703)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-100703 advisory. In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6thbh: reject oversized option lists struct ip6topts stores at most IP6TOPTSOPTSNR...

netfilter: ip6t_hbh: reject oversized option lists

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SUSE CVE-2026-52915

In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6thbh: reject oversized option lists struct ip6topts stores at most IP6TOPTSOPTSNR option descriptors, but hbhmt6check does not reject larger optsnr values supplied from userspace. Validate optsnr in the rule setup...

AZL-90908 CVE-2026-52915 affecting package kernel for versions less than 6.6.143.1-1

In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6thbh: reject oversized option lists struct ip6topts stores at most IP6TOPTSOPTSNR option descriptors, but hbhmt6check does not reject larger optsnr values supplied from userspace. Validate optsnr in the rule setup...

CVE-2026-52915

In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6thbh: reject oversized option lists struct ip6topts stores at most IP6TOPTSOPTSNR option descriptors, but hbhmt6check does not reject larger optsnr values supplied from userspace. Validate optsnr in the rule setup...

CVE-2026-52915 netfilter: ip6t_hbh: reject oversized option lists

In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6thbh: reject oversized option lists struct ip6topts stores at most IP6TOPTSOPTSNR option descriptors, but hbhmt6check does not reject larger optsnr values supplied from userspace. Validate optsnr in the rule setup...

EUVD-2026-38718

In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6thbh: reject oversized option lists struct ip6topts stores at most IP6TOPTSOPTSNR option descriptors, but hbhmt6check does not reject larger optsnr values supplied from userspace. Validate optsnr in the rule setup...

CVE-2026-52915

In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6thbh: reject oversized option lists struct ip6topts stores at most IP6TOPTSOPTSNR option descriptors, but hbhmt6check does not reject larger optsnr values supplied from userspace. Validate optsnr in the rule setup...

CVE-2026-52915

CVE-2026-52915 concerns the Linux kernel netfilter ip6t_hbh module, where ip6t_opts may store at most IP6T_OPTS_OPTSNR (16) option descriptors but hbh_mt6_check() did not reject larger optsnr values from userspace. This allowed a potential out-of-bounds condition (UBSAN: array-index-out-of-bounds...

CVE-2026-52915: Improper Validation of Array Index

In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6thbh: reject oversized option lists struct ip6topts stores at most IP6TOPTSOPTSNR option descriptors, but hbhmt6check does not reject larger optsnr values supplied from userspace. Validate optsnr in the rule setup...