Local kernel compromise via randomized callback mismatch

Memory corruption in Linux kernel 6.16 through 6.17.2 allows local users to read or write kernel memory or crash the system. With structure layout randomization enabled, crypto_acomp_streams assumes that scomp_alg alloc_ctx and free_ctx callbacks share its fixed order, so a transposed layout calls the wrong function and uses a garbage context pointer. The flaw requires a susceptible build whose compile-time randomization seed transposes the callbacks; unprivileged memory pressure can reach it through zswap.