CVE-2026-63922

CVE CVE-2026-63922EUVD EUVD-2026-45695Published 2026-07-19T14:55:24.000ZLast changed 2026-08-05T12:37:16.000ZCVSS 9.8

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 7.1; patch: 0; a831f5bbc89a9978795504be9e1ff412043f8f77 <9b6dcc0a39fd71752937f0b6b3973e1416085dcf; patch: 6.6.143; a831f5bbc89a9978795504be9e1ff412043f8f77 <f7b52afe3592eae66e160586b45a3f2242972c63; a831f5bbc89a9978795504be9e1ff412043f8f77 <ff375ed1cba81392346c5bfbf0bb7a13b2946f99; a831f5bbc89a9978795504be9e1ff412043f8f77 <751db1b802a067b7fff25880f4e9f9152a171538; patch: 7.0.12; patch: 6.18.35; patch: 5.15.210; a831f5bbc89a9978795504be9e1ff412043f8f77 <12d957979e4a800167842f1b42be6a606d227ebe; patch: 6.1.176; patch: 6.12.93; a831f5bbc89a9978795504be9e1ff412043f8f77 <b3ac54e5c905f86d22b502eacb5686a282c5659f; patch: 5.10.259; a831f5bbc89a9978795504be9e1ff412043f8f77 <1a11eb7431e3d2882f5bd5939c5a9bbc65ccf4d1; a831f5bbc89a9978795504be9e1ff412043f8f77 <f8aabed3ff3e986920cf02a2a2785e08e586b234; 2.6.19

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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