CVE-2026-63922

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-63922

Key Details

CVE	CVE-2026-63922
CVSS Score / Version	9.8 (Critical) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

ipv6: exthdrs: refresh nh after handling HAO option

ip6_parse_tlv() caches skb_network_header(skb) in nh while walking

IPv6 TLVs.

ipv6_dest_hao() may call pskb_expand_head() for a cloned skb, which can

move the skb head and invalidate the cached network header pointer.

Refresh nh after ipv6_dest_hao() returns so any trailing padding or TLVs

are parsed from the current skb head.

This matches the existing pattern used in ip6_parse_tlv() after helpers

that can modify skb header storage. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-63922
CVE	https://www.cve.org/CVERecord?id=CVE-2026-63922

Source

Reference

NVD

CVE