CVE-2026-97417 — netfilter: nf_conntrack: use get_unaligned_be32() in tcp_sack()
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 t…
Published: 2026-09-24 · CVSS: 7.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7