CVE-2026-63922 ipv6: exthdrs: refresh nh after handling HAO option

In the Linux kernel, the following vulnerability has been resolved: ipv6: exthdrs: refresh nh after handling HAO option ip6parsetlv caches skbnetworkheaderskb in nh while walking IPv6 TLVs. ipv6desthao may call pskbexpandhead for a cloned skb, which can move the skb head and invalidate the cached...

CVE-2026-63922

Summary: CVE-2026-63922 affects the Linux kernel IPv6 ext hdr processing. The root cause is that ip6_dest_hao() can call pskb_expand_head() on a cloned skb, which may move the skb head and invalidate a cached network header pointer used while walking IPv6 TLVs. The fix refreshes the cached networ...

CVE-2026-63922

In the Linux kernel, the following vulnerability has been resolved: ipv6: exthdrs: refresh nh after handling HAO option ip6parsetlv caches skbnetworkheaderskb in nh while walking IPv6 TLVs. ipv6desthao may call pskbexpandhead for a cloned skb, which can move the skb head and invalidate the cached...