CVE-2026-63922 (GCVE-0-2026-63922)
Vulnerability from cvelistv5
Published
2026-07-19 14:55
Modified
2026-10-19 20:17
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: a831f5bbc89a9978795504be9e1ff412043f8f77
Version: a831f5bbc89a9978795504be9e1ff412043f8f77
Version: a831f5bbc89a9978795504be9e1ff412043f8f77
Version: a831f5bbc89a9978795504be9e1ff412043f8f77
Version: a831f5bbc89a9978795504be9e1ff412043f8f77
Version: a831f5bbc89a9978795504be9e1ff412043f8f77
Version: a831f5bbc89a9978795504be9e1ff412043f8f77
Version: a831f5bbc89a9978795504be9e1ff412043f8f77
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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.