in portage tree there are sys-kernel/gentoo-sources from 4.9 to 5.18, and sys-kernel/linux-headers from 3.18 to 5.19 and i use =sys-kernel/gentoo-sources-5.10.* but older version of libseccomp was dropped, and version that left is requires >=sys-kernel/linux-headers-5.15 shouldn't they be kept? Reproducible: Always
It's generally fine to have newer headers than linux-headers and vice-versa (see e.g. https://sourceware.org/glibc/wiki/FAQ#What_version_of_the_Linux_kernel_headers_should_be_used.3F.
If you have a really, really strong reason that you actually can't use newer headers, I'm willing to consider restoring old, but I don't see a need.
ok, thank you for explanation