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CVE-2026-63924

ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.259, 5.15.210, 6.1.176, 6.6.143, 6.12.93, and 2 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • Technical impact: total

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: total

  3. Record last updated

Affected versions

  • Linux Linux

    From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in b3ac54e5c905f86d22b502eacb5686a282c5659f; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 645b99b1a185c91a79bdac4c5de0f91b212d64f0; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 9e883eaa878f4337b5873c706efb5a192364ed18; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in bddaa4dfc7f36e1ee343a0622f69288af2b9ace9; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 72af7beae774e46ed543f3f2f267bf0a141bfcdd; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in c512e1c819dfbf6ae95ee7a44b65b9ad98979157; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 2b56bbd928c030894c270cd33d60286326919458; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in d47548a36639095939f4747d4c43f2271366f565

  • Linux Linux

    2.6.12

  • KernelLinux

    From 2.6.12 · fixed in 5.10.259; From 5.11.0 · fixed in 5.15.210; From 5.16.0 · fixed in 6.1.176; From 6.2.0 · fixed in 6.6.143; From 6.7.0 · fixed in 6.12.93; From 6.13.0 · fixed in 6.18.35; From 6.19.0 · fixed in 7.0.12

References 8

git.kernel.org