CLSA-2026-1779202006 Fix CVE(s): CVE-2026-43284, CVE-2026-46300, CVE-2026-46333

Ubuntu: 4.15.0-256.267 CVE-2026-46333 - ptrace: require CAPSYSPTRACE when task has no mm CVE-2026-46333 CVE-2026-46300 - net: skbuff: propagate shared-frag marker through copy/coalesce/gro/shift paths CVE-2026-46300 CVE-2026-43284 - xfrm: esp: avoid in-place decrypt on shared skb frags...