Skip to main content
cve.nowby Sazabi
← All vulnerabilities
CVE-2026-97417

netfilter: nf_conntrack: use get_unaligned_be32() in tcp_sack()

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, and 1 more
None on Exploit-DB, Metasploit or GitHub

Summary

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack: use get_unaligned_be32() in tcp_sack() The timestamp-only fast path dereferences the option stream as *(__be32 *)ptr, which assumes 4-byte alignment that the TCP option stream does not guarantee. Use get_unaligned_be32() instead, which reads the value safely and already returns host byte order, so the htonl() on the comparison constant can be dropped. This matches the existing get_unaligned_be32() use later in the same function.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9 · fixed in 740ad3d17a281f7764dda4dbeb37cea52e2e31ae; From bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9 · fixed in a0523267de2523522b0f70972dd1ffa22ec6176c; From bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9 · fixed in 55bcc3376cd7b18954cc9814da697504fdaf12bf; From bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9 · fixed in 0d5ad732e4fdc569eb85861115e8f7b4c2c67852; From bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9 · fixed in 7ecfa46a536578a7ed335ddf31a854127268c27c; From bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9 · fixed in 4abc1af7ac209c066f4e5dd75cdd56876e5829a9; From bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9 · fixed in d3bf9eae486490832bd08fd62ab0ac601f346bd4

  • Linux Linux

    3.1

  • KernelLinux

    From 3.1.0 · fixed in 5.10.271; From 5.11.0 · fixed in 5.15.222; From 5.16.0 · fixed in 6.1.189; From 6.2.0 · fixed in 6.6.158; From 6.7.0 · fixed in 6.12.111; From 6.13.0 · fixed in 6.18.53

References 7

git.kernel.org