CVE-2026-80637 — netfilter: synproxy: fix unaligned memory access in timestamp adjustment
In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: fix unaligned memory access in timestamp adjustment Use get_unaligned_be32() and put_u…
Published: 2026-08-28 · CVSS: 7.5 · CVSS 3.1
In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: fix unaligned memory access in timestamp adjustment Use get_unaligned_be32() and put_unaligned_be32() to safely read and write the timestamp fields. This prevents performance degradation due to unaligned memory access or even a crash on strict alignment architectures. This follows the implementation of timestamp parsing in the networking stack at tcp_parse_options() and synproxy_parse_options().
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7