CVE-2026-63924
In the Linux kernel, the following vulnerability has been resolved: ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo() ipv6_hop_jumbo() calls pskb_trim_rcsum(), which can change skb pointers. Let's recompute nh pointer to make sure any change won't mess things up.
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A critical vulnerability has been identified in the Linux kernel's IPv6 networking stack. Improper pointer handling when processing jumbo headers could allow for remote memory corruption, potentially leading to system compromise or a kernel-level denial of service.
Relevant roles
Severity
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HEPSS
Technical description
In the Linux kernel, the following vulnerability has been resolved: ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo() ipv6_hop_jumbo() calls pskb_trim_rcsum(), which can change skb pointers. Let's recompute nh pointer to make sure any change won't mess things up.
References
- https://git.kernel.org/stable/c/2b56bbd928c030894c270cd33d60286326919458
- https://git.kernel.org/stable/c/645b99b1a185c91a79bdac4c5de0f91b212d64f0
- https://git.kernel.org/stable/c/72af7beae774e46ed543f3f2f267bf0a141bfcdd
- https://git.kernel.org/stable/c/9e883eaa878f4337b5873c706efb5a192364ed18
- https://git.kernel.org/stable/c/b3ac54e5c905f86d22b502eacb5686a282c5659f
- https://git.kernel.org/stable/c/bddaa4dfc7f36e1ee343a0622f69288af2b9ace9
- https://git.kernel.org/stable/c/c512e1c819dfbf6ae95ee7a44b65b9ad98979157
- https://git.kernel.org/stable/c/d47548a36639095939f4747d4c43f2271366f565