CVE-2026-63924
CRITICAL severity · CVSS 9.8 · Use-after-free
9.8CVSS CRITICAL
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)1%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/2b56bbd928c030894c270cd33d60286326919458 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/2b56bbd928c030894c270cd33d60286326919458Patch
- https://git.kernel.org/stable/c/645b99b1a185c91a79bdac4c5de0f91b212d64f0Patch
- https://git.kernel.org/stable/c/72af7beae774e46ed543f3f2f267bf0a141bfcddPatch
- https://git.kernel.org/stable/c/9e883eaa878f4337b5873c706efb5a192364ed18Patch
- https://git.kernel.org/stable/c/b3ac54e5c905f86d22b502eacb5686a282c5659fPatch
- https://git.kernel.org/stable/c/bddaa4dfc7f36e1ee343a0622f69288af2b9ace9Patch
- https://git.kernel.org/stable/c/c512e1c819dfbf6ae95ee7a44b65b9ad98979157Patch
- https://git.kernel.org/stable/c/d47548a36639095939f4747d4c43f2271366f565Patch