CVE-2026-63922
ipv6: exthdrs: refresh nh after handling HAO option
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Jul 19, 2026 |
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Affected Versions
Linux / Linux
a831f5bbc89a9978795504be9e1ff412043f8f77 < f8aabed3ff3e986920cf02a2a2785e08e586b234 a831f5bbc89a9978795504be9e1ff412043f8f77 < 1a11eb7431e3d2882f5bd5939c5a9bbc65ccf4d1 a831f5bbc89a9978795504be9e1ff412043f8f77 < 12d957979e4a800167842f1b42be6a606d227ebe a831f5bbc89a9978795504be9e1ff412043f8f77 < ff375ed1cba81392346c5bfbf0bb7a13b2946f99 a831f5bbc89a9978795504be9e1ff412043f8f77 < 751db1b802a067b7fff25880f4e9f9152a171538 a831f5bbc89a9978795504be9e1ff412043f8f77 < 9b6dcc0a39fd71752937f0b6b3973e1416085dcf a831f5bbc89a9978795504be9e1ff412043f8f77 < f7b52afe3592eae66e160586b45a3f2242972c63
Linux / Linux
2.6.19
References
git.kernel.org: https://git.kernel.org/stable/c/f8aabed3ff3e986920cf02a2a2785e08e586b234 git.kernel.org: https://git.kernel.org/stable/c/1a11eb7431e3d2882f5bd5939c5a9bbc65ccf4d1 git.kernel.org: https://git.kernel.org/stable/c/12d957979e4a800167842f1b42be6a606d227ebe git.kernel.org: https://git.kernel.org/stable/c/ff375ed1cba81392346c5bfbf0bb7a13b2946f99 git.kernel.org: https://git.kernel.org/stable/c/751db1b802a067b7fff25880f4e9f9152a171538 git.kernel.org: https://git.kernel.org/stable/c/9b6dcc0a39fd71752937f0b6b3973e1416085dcf git.kernel.org: https://git.kernel.org/stable/c/f7b52afe3592eae66e160586b45a3f2242972c63