Status: UPDATED | Advisory ID: CVE-2026-46244
| CVE | CVE-2026-46244 |
| CVSS Score / Version | |
| Updated | 2026-10-16 |
| CVSS Vector | |
| CVSS Prose | |
| Affected products | |
| Classified as |
| Vendor | Product | Affected Versions | Patch Status |
|---|---|---|---|
| Linux | Linux Kernel | ||
| Red Hat | Red Hat Enterprise Linux 10 | ||
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | ||
| Red Hat | Red Hat Enterprise Linux 9 | ||
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | ||
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
| Subsystems | OT Supporting Infrastructure |
| Sectors | All Sectors |
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nft_inner: Fix IPv6 inner_thoff desync
In nft_inner_parse_l2l3(), when processing inner IPv6 packets,
ipv6_find_hdr() correctly computes the transport header offset
traversing all extension headers, but the result is immediately
overwritten with nhoff + sizeof(_ip6h) (40 bytes), which only
accounts for the IPv6 base header. This creates a desync between
inner_thoff (wrong — points to extension header start) and l4proto
(correct — e.g., IPPROTO_TCP), enabling transport header forgery
and potential firewall bypass. This issue affects stable versions
from Linux 6.2.
For comparison, the normal (non-inner) IPv6 path correctly
preserves ipv6_find_hdr()'s result. Removing the incorrect overwrite
ensures that ipv6_find_hdr()'s calculated transport header offset is
preserved, thereby fixing the desynchronization. (NVD)
Monitor Linux's and Red Hat's web pages for any future patch releases.
| Source | Reference |
|---|---|
| NVD | https://nvd.nist.gov/vuln/detail/CVE-2026-46244 |
| CVE | https://www.cve.org/CVERecord?id=CVE-2026-46244 |