Stable kernels 6.2.9, 6.1.22, 5.15.105, and 5.4.239

Greg Kroah-Hartman has announced the release of the 6.2.9, 6.1.22,5.15.105, and 5.4.239 stable kernels. The latter (5.4.239)has single patch to fix the permissions of a selftest file, while the otherthree have a lengthy list of important fixes throughout the kernel tree.