Skip to content
CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-80637

netfilter: synproxy: fix unaligned memory access in timestamp adjustment

Description

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().

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 48b1de4c110a7afa4b85862f6c75af817db26fad to < b30a2d56ee47282f6a46cb2f50e315b2414851feaffected
  • 48b1de4c110a7afa4b85862f6c75af817db26fad to < 95cda0446f51077c343fdd8264be2737eb25a6c3affected
  • 48b1de4c110a7afa4b85862f6c75af817db26fad to < 2b8e7aaa38002d8ee2f48d87b1f392eadd8e98c4affected
  • 48b1de4c110a7afa4b85862f6c75af817db26fad to < 5c9c67cf7a3d16051dfb90e98836f530964dfb8eaffected
  • 48b1de4c110a7afa4b85862f6c75af817db26fad to < ea3d2caa5bfacf5db5c1cad521ca5d9144edd9a7affected
  • 48b1de4c110a7afa4b85862f6c75af817db26fad to < 992c20bc8a4aba220c8b95b467d049289778dad6affected

Linux Linux

Default version status: affected

  • 3.12affected
  • 0 to < 3.12unaffected
  • 6.1.191 to ≤ 6.1.*unaffected
  • 6.6.160 to ≤ 6.6.*unaffected
  • 6.12.97 to ≤ 6.12.*unaffected
  • 6.18.40 to ≤ 6.18.*unaffected
  • 7.1.5 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References