Bug 2502326 (CVE-2026-63924) - CVE-2026-63924 kernel: ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()
Summary: CVE-2026-63924 kernel: ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()
Keywords:
Status: NEW
Alias: CVE-2026-63924
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-19 16:02 UTC by OSIDB Bzimport
Modified: 2026-07-21 21:29 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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Description OSIDB Bzimport 2026-07-19 16:02:04 UTC 
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.
Comment 1 Keith Grant 2026-07-21 21:28:11 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026071948-CVE-2026-63924-ec60@gregkh/T
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